/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/array-examples/standard_copy2_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:47:46,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:47:46,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:47:46,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:47:46,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:47:46,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:47:46,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:47:46,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:47:46,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:47:46,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:47:46,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:47:46,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:47:46,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:47:46,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:47:46,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:47:46,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:47:46,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:47:46,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:47:46,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:47:46,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:47:46,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:47:46,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:47:46,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:47:46,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:47:46,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:47:46,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:47:46,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:47:46,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:47:46,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:47:46,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:47:46,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:47:46,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:47:46,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:47:46,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:47:46,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:47:46,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:47:46,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:47:46,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:47:46,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:47:46,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:47:46,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:47:46,096 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 09:47:46,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:47:46,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:47:46,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:47:46,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:47:46,122 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:47:46,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:47:46,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:47:46,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:47:46,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:47:46,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:47:46,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:47:46,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:47:46,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:47:46,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:47:46,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:47:46,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:47:46,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:47:46,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:47:46,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:47:46,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:47:46,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:47:46,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:47:46,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:47:46,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:47:46,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:47:46,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:47:46,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:47:46,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:47:46,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:47:46,127 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 09:47:46,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:47:46,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:47:46,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:47:46,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:47:46,442 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:47:46,443 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2020-10-12 09:47:46,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bec6960d/482a04520f594e73baa66ed27738444f/FLAGad7ff8cd9 [2020-10-12 09:47:46,933 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:47:46,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2020-10-12 09:47:46,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bec6960d/482a04520f594e73baa66ed27738444f/FLAGad7ff8cd9 [2020-10-12 09:47:47,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bec6960d/482a04520f594e73baa66ed27738444f [2020-10-12 09:47:47,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:47:47,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:47:47,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:47:47,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:47:47,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:47:47,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dadf5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47, skipping insertion in model container [2020-10-12 09:47:47,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:47:47,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:47:47,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:47:47,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:47:47,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:47:47,572 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:47:47,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47 WrapperNode [2020-10-12 09:47:47,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:47:47,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:47:47,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:47:47,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:47:47,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (1/1) ... [2020-10-12 09:47:47,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:47:47,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:47:47,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:47:47,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:47:47,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (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 09:47:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:47:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:47:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 09:47:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 09:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:47:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:47:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:47:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:47:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:47:48,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:47:48,105 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 09:47:48,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:47:48 BoogieIcfgContainer [2020-10-12 09:47:48,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:47:48,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:47:48,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:47:48,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:47:48,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:47:47" (1/3) ... [2020-10-12 09:47:48,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3c815a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:47:48, skipping insertion in model container [2020-10-12 09:47:48,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:47:47" (2/3) ... [2020-10-12 09:47:48,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3c815a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:47:48, skipping insertion in model container [2020-10-12 09:47:48,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:47:48" (3/3) ... [2020-10-12 09:47:48,122 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2020-10-12 09:47:48,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:47:48,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:47:48,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:47:48,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:47:48,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:47:48,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:47:48,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:47:48,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:47:48,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:47:48,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:47:48,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:47:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-12 09:47:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 09:47:48,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:47:48,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:47:48,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:47:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:47:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-10-12 09:47:48,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:47:48,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667039829] [2020-10-12 09:47:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:47:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 09:47:48,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:47:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-12 09:47:48,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:47:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 09:47:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:47:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:47:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:47:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:48,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:48,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:47:48,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 09:47:48,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:47:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:47:48,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667039829] [2020-10-12 09:47:48,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:47:48,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 09:47:48,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57526305] [2020-10-12 09:47:48,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 09:47:48,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:47:48,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 09:47:48,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:47:48,814 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-10-12 09:47:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:47:48,941 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-12 09:47:48,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 09:47:48,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-12 09:47:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:47:48,951 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:47:48,952 INFO L226 Difference]: Without dead ends: 29 [2020-10-12 09:47:48,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:47:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-12 09:47:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-12 09:47:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 09:47:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-12 09:47:48,997 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-12 09:47:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:47:48,998 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-12 09:47:48,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 09:47:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-12 09:47:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 09:47:48,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:47:48,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:47:49,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:47:49,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:47:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:47:49,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1878162454, now seen corresponding path program 1 times [2020-10-12 09:47:49,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:47:49,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849127500] [2020-10-12 09:47:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:47:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:49,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:49,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:49,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 09:47:49,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:47:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-12 09:47:49,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:47:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:47:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 09:47:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:47:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:47:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:50,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:47:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:47:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:47:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:47:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:47:50,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849127500] [2020-10-12 09:47:50,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:47:50,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:47:50,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097349818] [2020-10-12 09:47:50,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:47:50,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:47:50,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:47:50,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:47:50,119 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 11 states. [2020-10-12 09:47:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:47:50,436 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-12 09:47:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:47:50,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-12 09:47:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:47:50,441 INFO L225 Difference]: With dead ends: 49 [2020-10-12 09:47:50,441 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 09:47:50,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:47:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 09:47:50,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-12 09:47:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 09:47:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-12 09:47:50,476 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 21 [2020-10-12 09:47:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:47:50,477 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-12 09:47:50,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:47:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-12 09:47:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 09:47:50,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:47:50,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:47:50,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:47:50,481 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:47:50,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:47:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1057806260, now seen corresponding path program 2 times [2020-10-12 09:47:50,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:47:50,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230586486] [2020-10-12 09:47:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:47:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:51,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:51,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 09:47:51,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:47:51,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-12 09:47:51,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:47:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:47:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 09:47:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:52,225 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2020-10-12 09:47:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:47:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:52,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:52,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:47:52,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:47:52,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:47:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:47:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:47:52,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230586486] [2020-10-12 09:47:52,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:47:52,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:47:52,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727150353] [2020-10-12 09:47:52,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:47:52,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:47:52,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:47:52,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:47:52,528 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 13 states. [2020-10-12 09:47:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:47:52,973 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-12 09:47:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:47:52,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-10-12 09:47:52,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:47:52,977 INFO L225 Difference]: With dead ends: 51 [2020-10-12 09:47:52,977 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 09:47:52,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:47:52,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 09:47:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2020-10-12 09:47:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:47:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-12 09:47:52,986 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-10-12 09:47:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:47:52,987 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-12 09:47:52,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:47:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-12 09:47:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 09:47:52,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:47:52,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:47:52,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:47:52,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:47:52,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:47:52,989 INFO L82 PathProgramCache]: Analyzing trace with hash -105243059, now seen corresponding path program 1 times [2020-10-12 09:47:52,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:47:52,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853802287] [2020-10-12 09:47:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:47:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:53,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 09:47:53,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:47:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-12 09:47:53,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:47:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 09:47:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:47:53,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:53,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:47:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:53,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:53,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:47:53,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:47:53,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:47:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 09:47:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:53,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:47:53,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:47:53,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:47:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:53,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 09:47:53,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853802287] [2020-10-12 09:47:53,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:47:53,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:47:53,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796181747] [2020-10-12 09:47:53,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:47:53,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:47:53,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:47:53,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:47:53,432 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 5 states. [2020-10-12 09:47:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:47:53,551 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-12 09:47:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:47:53,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-12 09:47:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:47:53,553 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:47:53,554 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 09:47:53,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:47:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 09:47:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-12 09:47:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:47:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-12 09:47:53,563 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 29 [2020-10-12 09:47:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:47:53,564 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-12 09:47:53,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:47:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-12 09:47:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 09:47:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:47:53,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:47:53,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:47:53,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:47:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:47:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash -264537527, now seen corresponding path program 2 times [2020-10-12 09:47:53,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:47:53,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311867526] [2020-10-12 09:47:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:47:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:54,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:54,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 09:47:54,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:47:54,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-12 09:47:54,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:47:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:47:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 09:47:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:47:55,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:47:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:55,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:55,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:47:55,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:47:55,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:47:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:47:55,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 09:47:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:55,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:55,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:47:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:47:55,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:47:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:47:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:47:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:47:55,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311867526] [2020-10-12 09:47:55,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:47:55,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:47:55,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741395410] [2020-10-12 09:47:55,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:47:55,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:47:55,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:47:55,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:47:55,652 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 16 states. [2020-10-12 09:47:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:47:56,646 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-12 09:47:56,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:47:56,647 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-10-12 09:47:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:47:56,648 INFO L225 Difference]: With dead ends: 51 [2020-10-12 09:47:56,648 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 09:47:56,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:47:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 09:47:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-12 09:47:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 09:47:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-12 09:47:56,669 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 33 [2020-10-12 09:47:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:47:56,670 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-12 09:47:56,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:47:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-12 09:47:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 09:47:56,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:47:56,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:47:56,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:47:56,674 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:47:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:47:56,674 INFO L82 PathProgramCache]: Analyzing trace with hash 566704512, now seen corresponding path program 3 times [2020-10-12 09:47:56,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:47:56,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729031261] [2020-10-12 09:47:56,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:47:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:57,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:57,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 09:47:57,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:47:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-12 09:47:57,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:47:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:47:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:47:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:57,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:47:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:57,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:47:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:47:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:47:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:47:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 09:47:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:57,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:57,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:47:57,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:47:57,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:47:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:57,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:47:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 09:47:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:57,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:57,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:47:57,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:47:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:47:57,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:47:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:47:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:47:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:47:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 09:47:57,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729031261] [2020-10-12 09:47:57,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:47:57,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:47:57,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246725625] [2020-10-12 09:47:57,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:47:57,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:47:57,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:47:57,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:47:57,424 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2020-10-12 09:47:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:47:57,504 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-12 09:47:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:47:57,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-12 09:47:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:47:57,506 INFO L225 Difference]: With dead ends: 82 [2020-10-12 09:47:57,506 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 09:47:57,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:47:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 09:47:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-12 09:47:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:47:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-12 09:47:57,515 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 41 [2020-10-12 09:47:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:47:57,516 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-12 09:47:57,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:47:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-12 09:47:57,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 09:47:57,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:47:57,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:47:57,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:47:57,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:47:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:47:57,518 INFO L82 PathProgramCache]: Analyzing trace with hash 381643644, now seen corresponding path program 4 times [2020-10-12 09:47:57,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:47:57,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477752891] [2020-10-12 09:47:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:47:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:47:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:47:59,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:47:59,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 09:47:59,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:47:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-12 09:47:59,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:47:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:47:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:47:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 09:47:59,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:00,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:00,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:00,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:00,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:00,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:00,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:00,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 09:48:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:00,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 09:48:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 09:48:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:00,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:00,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:00,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 09:48:00,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:00,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 09:48:00,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477752891] [2020-10-12 09:48:00,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:00,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:48:00,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131115057] [2020-10-12 09:48:00,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:48:00,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:00,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:48:00,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:48:00,514 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 18 states. [2020-10-12 09:48:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:01,478 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-10-12 09:48:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:48:01,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-12 09:48:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:01,480 INFO L225 Difference]: With dead ends: 63 [2020-10-12 09:48:01,480 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 09:48:01,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:48:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 09:48:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-10-12 09:48:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:48:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-12 09:48:01,491 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 45 [2020-10-12 09:48:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:01,491 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-12 09:48:01,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:48:01,492 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-12 09:48:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 09:48:01,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:01,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:01,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:48:01,493 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:01,493 INFO L82 PathProgramCache]: Analyzing trace with hash 191645619, now seen corresponding path program 5 times [2020-10-12 09:48:01,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:01,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989808136] [2020-10-12 09:48:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:02,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:02,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 09:48:02,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:48:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-12 09:48:02,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:48:02,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 09:48:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:48:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:02,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:02,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:02,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:02,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:02,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 09:48:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:02,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:02,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 09:48:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:02,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:02,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:02,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:02,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 09:48:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:02,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 09:48:02,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989808136] [2020-10-12 09:48:02,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:02,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:48:02,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953726391] [2020-10-12 09:48:02,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:48:02,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:02,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:48:02,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:48:02,775 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-10-12 09:48:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:02,885 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-10-12 09:48:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:48:02,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-12 09:48:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:02,887 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:48:02,887 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 09:48:02,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:48:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 09:48:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-12 09:48:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 09:48:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-10-12 09:48:02,909 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 53 [2020-10-12 09:48:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:02,910 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-10-12 09:48:02,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:48:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-10-12 09:48:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 09:48:02,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:02,911 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:02,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:48:02,912 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1172197295, now seen corresponding path program 6 times [2020-10-12 09:48:02,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:02,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359516951] [2020-10-12 09:48:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:02,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:04,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:06,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:06,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 09:48:06,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:48:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3097 [2020-10-12 09:48:06,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:48:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:48:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 09:48:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:06,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:06,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:06,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:06,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:06,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:06,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:06,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 09:48:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:06,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:06,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:06,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:48:06,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:06,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 09:48:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:06,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:48:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:06,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 09:48:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:06,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:06,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:06,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:48:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 09:48:06,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359516951] [2020-10-12 09:48:06,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:06,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:48:06,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583959122] [2020-10-12 09:48:06,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:48:06,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:06,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:48:06,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:48:06,942 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 21 states. [2020-10-12 09:48:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:07,953 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-10-12 09:48:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:48:07,954 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-12 09:48:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:07,955 INFO L225 Difference]: With dead ends: 75 [2020-10-12 09:48:07,956 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 09:48:07,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:48:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 09:48:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-10-12 09:48:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:48:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-12 09:48:07,974 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 57 [2020-10-12 09:48:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:07,974 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-12 09:48:07,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:48:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-12 09:48:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 09:48:07,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:07,975 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:07,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:48:07,976 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1190573850, now seen corresponding path program 7 times [2020-10-12 09:48:07,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:07,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851301313] [2020-10-12 09:48:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:07,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:08,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:10,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 09:48:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:48:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-12 09:48:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:48:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 09:48:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:48:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:10,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:10,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:10,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:10,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 09:48:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:10,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:10,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:10,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 09:48:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:10,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:10,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:10,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 09:48:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:10,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:10,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:10,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:10,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 09:48:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:10,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:10,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:48:10,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 09:48:10,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851301313] [2020-10-12 09:48:10,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:10,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:48:10,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689294194] [2020-10-12 09:48:10,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:48:10,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:10,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:48:10,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:48:10,093 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 8 states. [2020-10-12 09:48:10,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:10,208 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2020-10-12 09:48:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:48:10,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-12 09:48:10,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:10,210 INFO L225 Difference]: With dead ends: 126 [2020-10-12 09:48:10,210 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 09:48:10,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:48:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 09:48:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-12 09:48:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 09:48:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-10-12 09:48:10,227 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 65 [2020-10-12 09:48:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:10,228 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-10-12 09:48:10,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:48:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-10-12 09:48:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 09:48:10,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:10,231 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:10,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:48:10,231 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:10,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1786259170, now seen corresponding path program 8 times [2020-10-12 09:48:10,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:10,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196918742] [2020-10-12 09:48:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:10,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:14,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:14,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 09:48:14,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:48:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4313 [2020-10-12 09:48:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:48:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:48:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 09:48:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 09:48:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:16,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 09:48:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:16,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:16,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:16,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:16,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:16,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:16,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 09:48:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:16,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:16,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 09:48:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:16,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:16,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:16,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:16,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:16,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 8 proven. 82 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 09:48:16,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196918742] [2020-10-12 09:48:16,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:16,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:48:16,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555642833] [2020-10-12 09:48:16,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:48:16,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:16,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:48:16,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:48:16,079 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 25 states. [2020-10-12 09:48:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:17,661 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2020-10-12 09:48:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:48:17,663 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 69 [2020-10-12 09:48:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:17,664 INFO L225 Difference]: With dead ends: 87 [2020-10-12 09:48:17,664 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 09:48:17,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:48:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 09:48:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-12 09:48:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 09:48:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-10-12 09:48:17,677 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 69 [2020-10-12 09:48:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:17,678 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-10-12 09:48:17,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:48:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-10-12 09:48:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 09:48:17,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:17,679 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:17,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:48:17,679 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:17,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:17,680 INFO L82 PathProgramCache]: Analyzing trace with hash 931020057, now seen corresponding path program 9 times [2020-10-12 09:48:17,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:17,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96994720] [2020-10-12 09:48:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:20,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 09:48:20,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:48:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2845 [2020-10-12 09:48:20,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:48:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 09:48:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:48:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:20,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:20,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:20,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:20,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:20,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:20,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 09:48:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 09:48:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:20,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:20,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:20,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:20,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:20,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 09:48:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 09:48:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 09:48:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:20,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:20,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:20,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-12 09:48:20,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96994720] [2020-10-12 09:48:20,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:20,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:48:20,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862469039] [2020-10-12 09:48:20,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:48:20,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:20,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:48:20,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:48:20,608 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 9 states. [2020-10-12 09:48:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:20,738 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2020-10-12 09:48:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:48:20,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-12 09:48:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:20,740 INFO L225 Difference]: With dead ends: 148 [2020-10-12 09:48:20,740 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 09:48:20,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:48:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 09:48:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-12 09:48:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 09:48:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-12 09:48:20,760 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 77 [2020-10-12 09:48:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:20,762 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-12 09:48:20,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:48:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-12 09:48:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 09:48:20,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:20,769 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:20,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:48:20,769 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash -68357867, now seen corresponding path program 10 times [2020-10-12 09:48:20,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:20,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191803869] [2020-10-12 09:48:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:24,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:25,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:25,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 09:48:25,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:48:25,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:48:25,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:48:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:48:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 09:48:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:27,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:27,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:27,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:27,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:27,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:27,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:27,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 09:48:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:27,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:27,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:27,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:27,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 09:48:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:27,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:27,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:27,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:27,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:27,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 09:48:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:27,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:27,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:27,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:27,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 09:48:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:27,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:27,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 09:48:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:27,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:27,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:27,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:27,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 10 proven. 122 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 09:48:27,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191803869] [2020-10-12 09:48:27,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:27,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:48:27,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978843998] [2020-10-12 09:48:27,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:48:27,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:27,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:48:27,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:48:27,533 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 27 states. [2020-10-12 09:48:29,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:29,066 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2020-10-12 09:48:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:48:29,067 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 81 [2020-10-12 09:48:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:29,068 INFO L225 Difference]: With dead ends: 99 [2020-10-12 09:48:29,069 INFO L226 Difference]: Without dead ends: 97 [2020-10-12 09:48:29,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:48:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-12 09:48:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2020-10-12 09:48:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 09:48:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-10-12 09:48:29,084 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 81 [2020-10-12 09:48:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:29,084 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-10-12 09:48:29,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:48:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-10-12 09:48:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 09:48:29,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:29,086 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:29,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:48:29,086 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:29,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1641339828, now seen corresponding path program 11 times [2020-10-12 09:48:29,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:29,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138931944] [2020-10-12 09:48:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:29,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:29,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 09:48:33,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:48:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4258 [2020-10-12 09:48:33,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:48:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:48:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:48:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:33,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:33,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 09:48:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:33,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:33,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:33,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 09:48:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:33,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:33,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:33,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:33,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:33,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:33,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 09:48:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:33,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:33,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 09:48:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:33,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:33,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:33,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 09:48:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:33,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:33,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 09:48:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:33,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:33,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:48:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-12 09:48:33,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138931944] [2020-10-12 09:48:33,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:33,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:48:33,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397610903] [2020-10-12 09:48:33,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:48:33,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:33,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:48:33,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:48:33,461 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand 10 states. [2020-10-12 09:48:33,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:33,634 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2020-10-12 09:48:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:48:33,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-12 09:48:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:33,636 INFO L225 Difference]: With dead ends: 170 [2020-10-12 09:48:33,636 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 09:48:33,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:48:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 09:48:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-12 09:48:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 09:48:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2020-10-12 09:48:33,659 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 89 [2020-10-12 09:48:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:33,660 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2020-10-12 09:48:33,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:48:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2020-10-12 09:48:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-12 09:48:33,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:33,663 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:33,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:48:33,663 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:33,663 INFO L82 PathProgramCache]: Analyzing trace with hash -65229240, now seen corresponding path program 12 times [2020-10-12 09:48:33,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:33,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756076464] [2020-10-12 09:48:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:33,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:38,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 09:48:38,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:48:38,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 09:48:38,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:48:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:48:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 09:48:38,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:40,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:40,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:40,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:40,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:40,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 09:48:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:40,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:40,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:40,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:40,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 09:48:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:40,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:40,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:40,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:40,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 09:48:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:40,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:40,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:40,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:40,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:40,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:40,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 09:48:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:40,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:40,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:40,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 09:48:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:40,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:40,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:40,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:48:40,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:40,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 09:48:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:40,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:40,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:40,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:40,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:40,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:48:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:48:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 12 proven. 170 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 09:48:40,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756076464] [2020-10-12 09:48:40,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:40,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:48:40,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659310442] [2020-10-12 09:48:40,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:48:40,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:40,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:48:40,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:48:40,844 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand 30 states. [2020-10-12 09:48:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:43,578 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2020-10-12 09:48:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:48:43,579 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 93 [2020-10-12 09:48:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:43,581 INFO L225 Difference]: With dead ends: 111 [2020-10-12 09:48:43,581 INFO L226 Difference]: Without dead ends: 109 [2020-10-12 09:48:43,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 09:48:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-12 09:48:43,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-10-12 09:48:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 09:48:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2020-10-12 09:48:43,597 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 93 [2020-10-12 09:48:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:43,597 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2020-10-12 09:48:43,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:48:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2020-10-12 09:48:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 09:48:43,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:43,599 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:43,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:48:43,599 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:43,599 INFO L82 PathProgramCache]: Analyzing trace with hash 250609279, now seen corresponding path program 13 times [2020-10-12 09:48:43,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:43,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382622686] [2020-10-12 09:48:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 09:48:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:48:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 09:48:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:48:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:48:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:48:48,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:48,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 09:48:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:48,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 09:48:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:48,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:48,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 09:48:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:48,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:48,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 09:48:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:48,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 09:48:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:48,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 09:48:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:48,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:48,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 09:48:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:48,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 09:48:48,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382622686] [2020-10-12 09:48:48,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:48,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:48:48,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958541286] [2020-10-12 09:48:48,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:48:48,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:48,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:48:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:48:48,758 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 11 states. [2020-10-12 09:48:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:48,880 INFO L93 Difference]: Finished difference Result 192 states and 198 transitions. [2020-10-12 09:48:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:48:48,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-10-12 09:48:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:48,882 INFO L225 Difference]: With dead ends: 192 [2020-10-12 09:48:48,882 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 09:48:48,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:48:48,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 09:48:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-12 09:48:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-12 09:48:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-10-12 09:48:48,900 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 101 [2020-10-12 09:48:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:48,900 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-10-12 09:48:48,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:48:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-10-12 09:48:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 09:48:48,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:48,903 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:48,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:48:48,904 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash -144220549, now seen corresponding path program 14 times [2020-10-12 09:48:48,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:48,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496117270] [2020-10-12 09:48:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:53,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:48:53,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:53,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 09:48:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:54,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:54,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 09:48:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:54,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:54,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:54,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 09:48:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:54,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:54,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:54,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 09:48:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 09:48:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:54,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:54,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:54,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:54,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 09:48:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:54,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:54,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:54,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:54,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 09:48:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:54,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:54,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 14 proven. 64 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-12 09:48:54,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496117270] [2020-10-12 09:48:54,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:54,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:48:54,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549055410] [2020-10-12 09:48:54,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:48:54,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:54,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:48:54,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:48:54,033 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 12 states. [2020-10-12 09:48:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:54,147 INFO L93 Difference]: Finished difference Result 198 states and 204 transitions. [2020-10-12 09:48:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:48:54,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-10-12 09:48:54,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:54,148 INFO L225 Difference]: With dead ends: 198 [2020-10-12 09:48:54,148 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 09:48:54,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:48:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 09:48:54,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-10-12 09:48:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-12 09:48:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-10-12 09:48:54,163 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 105 [2020-10-12 09:48:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:54,163 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-10-12 09:48:54,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:48:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-10-12 09:48:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 09:48:54,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:54,164 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:54,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:48:54,165 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:54,165 INFO L82 PathProgramCache]: Analyzing trace with hash 957042807, now seen corresponding path program 15 times [2020-10-12 09:48:54,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:54,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797759850] [2020-10-12 09:48:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 09:48:59,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:48:59,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:48:59,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:48:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:48:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:48:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:48:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:48:59,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:48:59,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:48:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 09:48:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:59,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:59,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 09:48:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:59,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 09:48:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:59,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:59,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 09:48:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:59,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:59,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 09:48:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:59,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:59,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 09:48:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 09:48:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:48:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:48:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:48:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:48:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:48:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:48:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:48:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:48:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:48:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-12 09:48:59,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797759850] [2020-10-12 09:48:59,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:48:59,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:48:59,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167617909] [2020-10-12 09:48:59,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:48:59,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:48:59,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:48:59,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:48:59,323 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 13 states. [2020-10-12 09:48:59,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:48:59,466 INFO L93 Difference]: Finished difference Result 204 states and 210 transitions. [2020-10-12 09:48:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:48:59,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 109 [2020-10-12 09:48:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:48:59,467 INFO L225 Difference]: With dead ends: 204 [2020-10-12 09:48:59,467 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 09:48:59,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:48:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 09:48:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-10-12 09:48:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 09:48:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2020-10-12 09:48:59,482 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 109 [2020-10-12 09:48:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:48:59,482 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2020-10-12 09:48:59,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:48:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2020-10-12 09:48:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 09:48:59,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:48:59,484 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:48:59,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:48:59,484 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:48:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:48:59,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1245260685, now seen corresponding path program 16 times [2020-10-12 09:48:59,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:48:59,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942549768] [2020-10-12 09:48:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:48:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:48:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:48:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 09:49:04,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:04,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:49:04,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:49:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:49:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:49:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:04,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 09:49:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:04,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 09:49:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:04,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 09:49:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:04,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:04,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 09:49:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:04,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 09:49:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:04,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:04,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 09:49:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:04,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:04,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 09:49:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:04,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:04,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:04,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:04,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 14 proven. 100 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-12 09:49:04,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942549768] [2020-10-12 09:49:04,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:04,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:49:04,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311398554] [2020-10-12 09:49:04,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:49:04,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:04,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:49:04,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:49:04,702 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 14 states. [2020-10-12 09:49:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:04,933 INFO L93 Difference]: Finished difference Result 210 states and 216 transitions. [2020-10-12 09:49:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:49:04,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 113 [2020-10-12 09:49:04,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:04,935 INFO L225 Difference]: With dead ends: 210 [2020-10-12 09:49:04,936 INFO L226 Difference]: Without dead ends: 123 [2020-10-12 09:49:04,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:49:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-12 09:49:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2020-10-12 09:49:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 09:49:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2020-10-12 09:49:04,959 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 113 [2020-10-12 09:49:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:04,959 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2020-10-12 09:49:04,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:49:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2020-10-12 09:49:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 09:49:04,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:04,961 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:04,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:49:04,961 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:04,962 INFO L82 PathProgramCache]: Analyzing trace with hash -788206993, now seen corresponding path program 17 times [2020-10-12 09:49:04,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:04,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848987761] [2020-10-12 09:49:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:04,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:05,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 09:49:10,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 09:49:10,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:49:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:49:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:49:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:10,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 09:49:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:10,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:10,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 09:49:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:10,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 09:49:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 09:49:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 09:49:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:10,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:10,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:10,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 09:49:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 09:49:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:10,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:10,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:10,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 14 proven. 121 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 09:49:10,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848987761] [2020-10-12 09:49:10,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:10,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:49:10,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539569743] [2020-10-12 09:49:10,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:49:10,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:10,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:49:10,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:49:10,195 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand 15 states. [2020-10-12 09:49:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:10,418 INFO L93 Difference]: Finished difference Result 216 states and 222 transitions. [2020-10-12 09:49:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:49:10,418 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 117 [2020-10-12 09:49:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:10,420 INFO L225 Difference]: With dead ends: 216 [2020-10-12 09:49:10,420 INFO L226 Difference]: Without dead ends: 127 [2020-10-12 09:49:10,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:49:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-12 09:49:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-12 09:49:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-12 09:49:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2020-10-12 09:49:10,440 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 117 [2020-10-12 09:49:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:10,440 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2020-10-12 09:49:10,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:49:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2020-10-12 09:49:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 09:49:10,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:10,442 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:10,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:49:10,442 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash -273640853, now seen corresponding path program 18 times [2020-10-12 09:49:10,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:10,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603778043] [2020-10-12 09:49:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 09:49:15,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 09:49:15,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:49:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:49:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:49:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:15,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:15,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:15,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 09:49:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:15,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:15,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 09:49:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:15,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:15,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 09:49:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:15,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:15,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 09:49:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:15,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:15,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 09:49:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:15,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 09:49:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:15,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:15,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 09:49:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:15,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:15,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:15,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:15,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:49:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 14 proven. 144 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2020-10-12 09:49:15,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603778043] [2020-10-12 09:49:15,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:15,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:49:15,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493244300] [2020-10-12 09:49:15,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:49:15,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:15,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:49:15,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:49:15,725 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 16 states. [2020-10-12 09:49:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:15,976 INFO L93 Difference]: Finished difference Result 222 states and 228 transitions. [2020-10-12 09:49:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:49:15,976 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 121 [2020-10-12 09:49:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:15,977 INFO L225 Difference]: With dead ends: 222 [2020-10-12 09:49:15,978 INFO L226 Difference]: Without dead ends: 131 [2020-10-12 09:49:15,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:49:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-12 09:49:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-12 09:49:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 09:49:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-12 09:49:16,001 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 121 [2020-10-12 09:49:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:16,002 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-12 09:49:16,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:49:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-12 09:49:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 09:49:16,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:16,003 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:16,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:49:16,004 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:16,004 INFO L82 PathProgramCache]: Analyzing trace with hash -130757529, now seen corresponding path program 19 times [2020-10-12 09:49:16,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:16,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732210866] [2020-10-12 09:49:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 09:49:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 09:49:21,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:49:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:49:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:49:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 09:49:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:21,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:21,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 09:49:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 09:49:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 09:49:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:21,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 09:49:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:21,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:21,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 09:49:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:21,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:21,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 09:49:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:21,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:21,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:21,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 14 proven. 169 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-12 09:49:21,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732210866] [2020-10-12 09:49:21,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:21,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:49:21,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978677945] [2020-10-12 09:49:21,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:49:21,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:21,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:49:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:49:21,261 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 17 states. [2020-10-12 09:49:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:21,434 INFO L93 Difference]: Finished difference Result 228 states and 234 transitions. [2020-10-12 09:49:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:49:21,436 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 125 [2020-10-12 09:49:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:21,437 INFO L225 Difference]: With dead ends: 228 [2020-10-12 09:49:21,437 INFO L226 Difference]: Without dead ends: 135 [2020-10-12 09:49:21,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:49:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-12 09:49:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-10-12 09:49:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-12 09:49:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2020-10-12 09:49:21,454 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 125 [2020-10-12 09:49:21,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:21,455 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2020-10-12 09:49:21,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:49:21,455 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2020-10-12 09:49:21,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 09:49:21,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:21,456 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:21,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:49:21,457 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:21,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:21,457 INFO L82 PathProgramCache]: Analyzing trace with hash -763586461, now seen corresponding path program 20 times [2020-10-12 09:49:21,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:21,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501229144] [2020-10-12 09:49:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 09:49:26,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:49:26,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:49:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:49:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:49:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:26,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 09:49:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:26,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:26,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 09:49:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:26,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:26,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 09:49:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:26,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:26,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 09:49:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:26,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:26,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 09:49:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:26,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 09:49:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:26,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:26,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 09:49:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:26,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:26,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:26,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 14 proven. 196 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-10-12 09:49:26,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501229144] [2020-10-12 09:49:26,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:26,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:49:26,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630349794] [2020-10-12 09:49:26,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:49:26,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:26,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:49:26,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:49:26,685 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand 18 states. [2020-10-12 09:49:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:26,920 INFO L93 Difference]: Finished difference Result 234 states and 240 transitions. [2020-10-12 09:49:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:49:26,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 129 [2020-10-12 09:49:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:26,922 INFO L225 Difference]: With dead ends: 234 [2020-10-12 09:49:26,922 INFO L226 Difference]: Without dead ends: 139 [2020-10-12 09:49:26,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:49:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-12 09:49:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-12 09:49:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 09:49:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2020-10-12 09:49:26,941 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 129 [2020-10-12 09:49:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:26,942 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2020-10-12 09:49:26,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:49:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2020-10-12 09:49:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 09:49:26,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:26,943 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:26,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:49:26,944 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:26,944 INFO L82 PathProgramCache]: Analyzing trace with hash -403507617, now seen corresponding path program 21 times [2020-10-12 09:49:26,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:26,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977025979] [2020-10-12 09:49:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:31,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:31,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 09:49:31,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 09:49:31,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:49:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 09:49:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:49:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:32,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:32,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 09:49:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:32,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 09:49:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:32,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:32,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:32,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 09:49:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:32,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:32,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 09:49:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:32,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:32,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 09:49:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:32,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:32,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:32,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 09:49:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:32,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:32,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 09:49:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 14 proven. 225 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2020-10-12 09:49:32,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977025979] [2020-10-12 09:49:32,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:32,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:49:32,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411194821] [2020-10-12 09:49:32,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:49:32,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:49:32,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:49:32,202 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand 19 states. [2020-10-12 09:49:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:32,449 INFO L93 Difference]: Finished difference Result 240 states and 246 transitions. [2020-10-12 09:49:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:49:32,450 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 133 [2020-10-12 09:49:32,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:32,451 INFO L225 Difference]: With dead ends: 240 [2020-10-12 09:49:32,452 INFO L226 Difference]: Without dead ends: 143 [2020-10-12 09:49:32,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:49:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-12 09:49:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-10-12 09:49:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-12 09:49:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2020-10-12 09:49:32,467 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 133 [2020-10-12 09:49:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:32,467 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2020-10-12 09:49:32,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:49:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2020-10-12 09:49:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 09:49:32,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:32,469 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:32,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:49:32,469 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1551702437, now seen corresponding path program 22 times [2020-10-12 09:49:32,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:32,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755433447] [2020-10-12 09:49:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 09:49:37,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 09:49:37,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:49:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 09:49:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:49:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:37,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:37,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 09:49:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:37,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 09:49:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:37,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:37,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 09:49:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:37,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:37,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 09:49:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:37,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:37,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 09:49:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:37,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 09:49:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:37,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:37,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 09:49:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 14 proven. 256 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-12 09:49:37,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755433447] [2020-10-12 09:49:37,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:37,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:49:37,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952711780] [2020-10-12 09:49:37,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:49:37,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:37,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:49:37,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:49:37,754 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand 20 states. [2020-10-12 09:49:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:38,015 INFO L93 Difference]: Finished difference Result 246 states and 252 transitions. [2020-10-12 09:49:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:49:38,016 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 137 [2020-10-12 09:49:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:38,018 INFO L225 Difference]: With dead ends: 246 [2020-10-12 09:49:38,018 INFO L226 Difference]: Without dead ends: 147 [2020-10-12 09:49:38,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:49:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-12 09:49:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-10-12 09:49:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-12 09:49:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2020-10-12 09:49:38,034 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 137 [2020-10-12 09:49:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:38,034 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2020-10-12 09:49:38,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:49:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2020-10-12 09:49:38,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-12 09:49:38,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:38,035 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:38,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:49:38,036 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:38,036 INFO L82 PathProgramCache]: Analyzing trace with hash -241735593, now seen corresponding path program 23 times [2020-10-12 09:49:38,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:38,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616485791] [2020-10-12 09:49:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:38,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 09:49:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-12 09:49:43,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:49:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 09:49:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:49:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 09:49:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 09:49:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 09:49:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:43,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 09:49:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:43,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 09:49:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:43,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:43,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 09:49:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:43,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 09:49:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:43,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:43,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 14 proven. 289 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-12 09:49:43,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616485791] [2020-10-12 09:49:43,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:43,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:49:43,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734489785] [2020-10-12 09:49:43,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:49:43,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:43,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:49:43,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:49:43,386 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand 21 states. [2020-10-12 09:49:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:43,658 INFO L93 Difference]: Finished difference Result 252 states and 258 transitions. [2020-10-12 09:49:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:49:43,659 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 141 [2020-10-12 09:49:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:43,660 INFO L225 Difference]: With dead ends: 252 [2020-10-12 09:49:43,660 INFO L226 Difference]: Without dead ends: 151 [2020-10-12 09:49:43,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:49:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-12 09:49:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-12 09:49:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-12 09:49:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2020-10-12 09:49:43,680 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 141 [2020-10-12 09:49:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:43,680 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2020-10-12 09:49:43,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:49:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2020-10-12 09:49:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 09:49:43,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:43,681 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:43,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:49:43,682 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1071940525, now seen corresponding path program 24 times [2020-10-12 09:49:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:43,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111041585] [2020-10-12 09:49:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:43,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:48,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 09:49:48,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5168 [2020-10-12 09:49:48,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:49:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:49:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:49:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:49,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:49,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 09:49:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:49,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 09:49:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:49,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:49,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 09:49:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:49,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:49,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 09:49:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:49,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:49,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:49,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 09:49:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:49,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:49,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 09:49:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:49,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:49,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 09:49:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:49,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 14 proven. 324 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2020-10-12 09:49:49,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111041585] [2020-10-12 09:49:49,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:49,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:49:49,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738668937] [2020-10-12 09:49:49,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:49:49,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:49:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:49:49,165 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand 22 states. [2020-10-12 09:49:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:49,446 INFO L93 Difference]: Finished difference Result 258 states and 264 transitions. [2020-10-12 09:49:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:49:49,447 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-12 09:49:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:49,449 INFO L225 Difference]: With dead ends: 258 [2020-10-12 09:49:49,449 INFO L226 Difference]: Without dead ends: 155 [2020-10-12 09:49:49,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:49:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-12 09:49:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-10-12 09:49:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-12 09:49:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2020-10-12 09:49:49,463 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 145 [2020-10-12 09:49:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:49,464 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2020-10-12 09:49:49,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:49:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2020-10-12 09:49:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 09:49:49,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:49,465 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:49,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:49:49,465 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:49,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:49,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2121933391, now seen corresponding path program 25 times [2020-10-12 09:49:49,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:49,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448956445] [2020-10-12 09:49:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 09:49:54,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:49:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-12 09:49:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:49:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:49:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:49:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:49:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:49:54,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:49:54,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:49:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 09:49:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:54,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 09:49:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:54,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:54,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 09:49:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:54,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:54,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:54,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 09:49:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:54,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:54,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 09:49:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:54,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:54,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 09:49:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:54,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:54,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 09:49:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:49:54,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:49:54,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:49:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:49:54,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:49:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:49:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:49:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:49:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:49:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 14 proven. 361 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2020-10-12 09:49:54,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448956445] [2020-10-12 09:49:54,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:49:54,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:49:54,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380058054] [2020-10-12 09:49:54,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:49:54,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:49:54,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:49:54,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:49:54,880 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand 23 states. [2020-10-12 09:49:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:49:55,189 INFO L93 Difference]: Finished difference Result 264 states and 270 transitions. [2020-10-12 09:49:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:49:55,190 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 149 [2020-10-12 09:49:55,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:49:55,191 INFO L225 Difference]: With dead ends: 264 [2020-10-12 09:49:55,191 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 09:49:55,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:49:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 09:49:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-10-12 09:49:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 09:49:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 160 transitions. [2020-10-12 09:49:55,210 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 160 transitions. Word has length 149 [2020-10-12 09:49:55,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:49:55,211 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 160 transitions. [2020-10-12 09:49:55,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:49:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 160 transitions. [2020-10-12 09:49:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 09:49:55,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:49:55,212 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:49:55,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:49:55,212 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:49:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:49:55,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1650566581, now seen corresponding path program 26 times [2020-10-12 09:49:55,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:49:55,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241651247] [2020-10-12 09:49:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:49:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:49:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:49:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 09:50:00,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-12 09:50:00,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:50:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 09:50:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:50:00,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:00,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:00,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 09:50:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:00,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:50:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 09:50:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:00,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:00,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 09:50:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:00,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:50:00,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 09:50:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:00,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:00,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 09:50:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:00,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 09:50:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:00,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:00,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 09:50:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:00,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 14 proven. 400 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-12 09:50:00,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241651247] [2020-10-12 09:50:00,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:00,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:50:00,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700947162] [2020-10-12 09:50:00,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:50:00,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:00,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:50:00,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:50:00,740 INFO L87 Difference]: Start difference. First operand 157 states and 160 transitions. Second operand 24 states. [2020-10-12 09:50:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:01,016 INFO L93 Difference]: Finished difference Result 270 states and 276 transitions. [2020-10-12 09:50:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:50:01,016 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 153 [2020-10-12 09:50:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:01,018 INFO L225 Difference]: With dead ends: 270 [2020-10-12 09:50:01,018 INFO L226 Difference]: Without dead ends: 163 [2020-10-12 09:50:01,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:50:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-12 09:50:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-10-12 09:50:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 09:50:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2020-10-12 09:50:01,041 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 153 [2020-10-12 09:50:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:01,041 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2020-10-12 09:50:01,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:50:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2020-10-12 09:50:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 09:50:01,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:01,042 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:01,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:50:01,043 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:01,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:01,043 INFO L82 PathProgramCache]: Analyzing trace with hash 267592775, now seen corresponding path program 27 times [2020-10-12 09:50:01,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:01,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874011779] [2020-10-12 09:50:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 09:50:06,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-12 09:50:06,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:50:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 09:50:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:50:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 09:50:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:06,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:06,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 09:50:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:06,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 09:50:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 09:50:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 09:50:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:06,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 09:50:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:06,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:06,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 09:50:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 14 proven. 441 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2020-10-12 09:50:06,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874011779] [2020-10-12 09:50:06,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:06,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:50:06,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462003965] [2020-10-12 09:50:06,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:50:06,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:50:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:50:06,566 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand 25 states. [2020-10-12 09:50:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:06,872 INFO L93 Difference]: Finished difference Result 276 states and 282 transitions. [2020-10-12 09:50:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:50:06,873 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 157 [2020-10-12 09:50:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:06,875 INFO L225 Difference]: With dead ends: 276 [2020-10-12 09:50:06,875 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 09:50:06,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:50:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 09:50:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2020-10-12 09:50:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-12 09:50:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2020-10-12 09:50:06,895 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 157 [2020-10-12 09:50:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:06,895 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2020-10-12 09:50:06,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:50:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2020-10-12 09:50:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 09:50:06,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:06,896 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:06,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:50:06,897 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:06,897 INFO L82 PathProgramCache]: Analyzing trace with hash -916225981, now seen corresponding path program 28 times [2020-10-12 09:50:06,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:06,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109074911] [2020-10-12 09:50:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-12 09:50:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5167 [2020-10-12 09:50:12,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:50:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 09:50:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:50:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:12,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:12,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:12,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 09:50:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:12,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:12,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 09:50:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:12,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:12,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 09:50:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:12,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:12,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:12,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 09:50:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:12,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:12,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 09:50:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 09:50:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:12,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:12,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 09:50:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:12,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:12,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:12,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 14 proven. 484 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2020-10-12 09:50:12,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109074911] [2020-10-12 09:50:12,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:12,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:50:12,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989011730] [2020-10-12 09:50:12,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:50:12,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:12,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:50:12,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:50:12,512 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand 26 states. [2020-10-12 09:50:12,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:12,786 INFO L93 Difference]: Finished difference Result 282 states and 288 transitions. [2020-10-12 09:50:12,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:50:12,786 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 161 [2020-10-12 09:50:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:12,788 INFO L225 Difference]: With dead ends: 282 [2020-10-12 09:50:12,789 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 09:50:12,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:50:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 09:50:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-10-12 09:50:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-12 09:50:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2020-10-12 09:50:12,809 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 161 [2020-10-12 09:50:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:12,810 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2020-10-12 09:50:12,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:50:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2020-10-12 09:50:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 09:50:12,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:12,811 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:12,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:50:12,811 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1062891071, now seen corresponding path program 29 times [2020-10-12 09:50:12,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:12,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715221390] [2020-10-12 09:50:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 09:50:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:50:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:18,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:18,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:18,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 09:50:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 09:50:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:50:18,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 09:50:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:18,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:18,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 09:50:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:50:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 09:50:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:18,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:18,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 09:50:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:18,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:18,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 09:50:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:18,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1254 backedges. 14 proven. 529 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2020-10-12 09:50:18,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715221390] [2020-10-12 09:50:18,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:18,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:50:18,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061514576] [2020-10-12 09:50:18,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:50:18,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:18,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:50:18,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:50:18,281 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 27 states. [2020-10-12 09:50:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:18,598 INFO L93 Difference]: Finished difference Result 288 states and 294 transitions. [2020-10-12 09:50:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:50:18,599 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 165 [2020-10-12 09:50:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:18,600 INFO L225 Difference]: With dead ends: 288 [2020-10-12 09:50:18,600 INFO L226 Difference]: Without dead ends: 175 [2020-10-12 09:50:18,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:50:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-12 09:50:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-10-12 09:50:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-12 09:50:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 176 transitions. [2020-10-12 09:50:18,626 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 176 transitions. Word has length 165 [2020-10-12 09:50:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:18,628 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 176 transitions. [2020-10-12 09:50:18,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:50:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 176 transitions. [2020-10-12 09:50:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 09:50:18,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:18,629 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:18,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:50:18,634 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:18,636 INFO L82 PathProgramCache]: Analyzing trace with hash -389878213, now seen corresponding path program 30 times [2020-10-12 09:50:18,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:18,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343316262] [2020-10-12 09:50:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 09:50:23,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:23,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:50:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:50:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:50:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:50:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:24,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 09:50:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:24,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:24,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 09:50:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:24,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:24,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 09:50:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:24,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:24,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 09:50:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:24,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:24,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 09:50:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:24,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:24,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 09:50:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:24,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:24,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 09:50:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 14 proven. 576 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2020-10-12 09:50:24,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343316262] [2020-10-12 09:50:24,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:24,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:50:24,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356400937] [2020-10-12 09:50:24,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:50:24,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:24,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:50:24,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:50:24,099 INFO L87 Difference]: Start difference. First operand 173 states and 176 transitions. Second operand 28 states. [2020-10-12 09:50:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:24,460 INFO L93 Difference]: Finished difference Result 294 states and 300 transitions. [2020-10-12 09:50:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:50:24,461 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 169 [2020-10-12 09:50:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:24,463 INFO L225 Difference]: With dead ends: 294 [2020-10-12 09:50:24,463 INFO L226 Difference]: Without dead ends: 179 [2020-10-12 09:50:24,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:50:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-12 09:50:24,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-10-12 09:50:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-12 09:50:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 180 transitions. [2020-10-12 09:50:24,483 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 180 transitions. Word has length 169 [2020-10-12 09:50:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:24,484 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 180 transitions. [2020-10-12 09:50:24,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:50:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 180 transitions. [2020-10-12 09:50:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 09:50:24,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:24,485 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:24,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:50:24,485 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:24,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:24,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1106771913, now seen corresponding path program 31 times [2020-10-12 09:50:24,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:24,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638515403] [2020-10-12 09:50:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:50:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:29,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 09:50:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:29,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:29,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 09:50:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 09:50:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:29,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:29,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 09:50:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 09:50:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:29,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:29,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 09:50:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:29,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 09:50:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:29,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:29,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 14 proven. 625 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2020-10-12 09:50:30,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638515403] [2020-10-12 09:50:30,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:30,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:50:30,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362716592] [2020-10-12 09:50:30,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:50:30,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:30,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:50:30,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:50:30,010 INFO L87 Difference]: Start difference. First operand 177 states and 180 transitions. Second operand 29 states. [2020-10-12 09:50:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:30,366 INFO L93 Difference]: Finished difference Result 300 states and 306 transitions. [2020-10-12 09:50:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:50:30,367 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 173 [2020-10-12 09:50:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:30,369 INFO L225 Difference]: With dead ends: 300 [2020-10-12 09:50:30,369 INFO L226 Difference]: Without dead ends: 183 [2020-10-12 09:50:30,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:50:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-12 09:50:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2020-10-12 09:50:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-12 09:50:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2020-10-12 09:50:30,405 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 173 [2020-10-12 09:50:30,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:30,405 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2020-10-12 09:50:30,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:50:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2020-10-12 09:50:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-12 09:50:30,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:30,408 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:30,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:50:30,408 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:30,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:30,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1189829581, now seen corresponding path program 32 times [2020-10-12 09:50:30,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:30,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879477282] [2020-10-12 09:50:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-12 09:50:35,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 09:50:35,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:50:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 09:50:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:50:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 09:50:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 09:50:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:35,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:35,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 09:50:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:35,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:35,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:35,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 09:50:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:35,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:35,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:35,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 09:50:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:35,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:35,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 09:50:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-12 09:50:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:35,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:35,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:35,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:35,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1548 backedges. 14 proven. 676 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-12 09:50:35,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879477282] [2020-10-12 09:50:35,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:35,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:50:35,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653795173] [2020-10-12 09:50:35,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:50:35,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:35,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:50:35,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:50:35,963 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand 30 states. [2020-10-12 09:50:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:36,360 INFO L93 Difference]: Finished difference Result 306 states and 312 transitions. [2020-10-12 09:50:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:50:36,361 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 177 [2020-10-12 09:50:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:36,363 INFO L225 Difference]: With dead ends: 306 [2020-10-12 09:50:36,363 INFO L226 Difference]: Without dead ends: 187 [2020-10-12 09:50:36,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:50:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-12 09:50:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-10-12 09:50:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-12 09:50:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2020-10-12 09:50:36,383 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 177 [2020-10-12 09:50:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:36,383 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2020-10-12 09:50:36,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:50:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2020-10-12 09:50:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 09:50:36,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:36,384 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:36,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 09:50:36,384 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:36,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1431558703, now seen corresponding path program 33 times [2020-10-12 09:50:36,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:36,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313992949] [2020-10-12 09:50:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:36,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:36,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:50:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:41,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:41,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 09:50:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:41,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:41,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 09:50:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:41,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:41,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:41,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 09:50:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:41,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:41,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:41,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 09:50:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:41,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:41,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 09:50:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:41,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:41,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 09:50:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-12 09:50:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:41,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:41,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:41,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:41,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 14 proven. 729 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2020-10-12 09:50:41,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313992949] [2020-10-12 09:50:41,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:41,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:50:41,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283110310] [2020-10-12 09:50:41,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:50:41,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:41,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:50:41,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:50:41,994 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand 31 states. [2020-10-12 09:50:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:42,291 INFO L93 Difference]: Finished difference Result 312 states and 318 transitions. [2020-10-12 09:50:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:50:42,291 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 181 [2020-10-12 09:50:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:42,293 INFO L225 Difference]: With dead ends: 312 [2020-10-12 09:50:42,293 INFO L226 Difference]: Without dead ends: 191 [2020-10-12 09:50:42,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:50:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-12 09:50:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2020-10-12 09:50:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-12 09:50:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2020-10-12 09:50:42,314 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 181 [2020-10-12 09:50:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:42,315 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2020-10-12 09:50:42,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:50:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2020-10-12 09:50:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-12 09:50:42,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:42,316 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:42,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 09:50:42,317 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:42,317 INFO L82 PathProgramCache]: Analyzing trace with hash 263234091, now seen corresponding path program 34 times [2020-10-12 09:50:42,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:42,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821056569] [2020-10-12 09:50:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-12 09:50:48,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5740 [2020-10-12 09:50:48,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:50:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:50:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:50:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:48,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 09:50:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:48,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 09:50:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:48,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:48,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 09:50:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 09:50:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:48,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:48,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 09:50:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:48,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:48,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-12 09:50:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:48,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:48,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:48,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 09:50:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:48,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:48,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:48,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:48,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 14 proven. 784 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-12 09:50:48,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821056569] [2020-10-12 09:50:48,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:48,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:50:48,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006296195] [2020-10-12 09:50:48,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:50:48,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:48,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:50:48,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:50:48,611 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand 32 states. [2020-10-12 09:50:49,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:49,026 INFO L93 Difference]: Finished difference Result 318 states and 324 transitions. [2020-10-12 09:50:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:50:49,027 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 185 [2020-10-12 09:50:49,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:49,028 INFO L225 Difference]: With dead ends: 318 [2020-10-12 09:50:49,029 INFO L226 Difference]: Without dead ends: 195 [2020-10-12 09:50:49,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:50:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-12 09:50:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2020-10-12 09:50:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-12 09:50:49,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2020-10-12 09:50:49,051 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 185 [2020-10-12 09:50:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:49,052 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2020-10-12 09:50:49,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:50:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2020-10-12 09:50:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-12 09:50:49,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:49,054 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:49,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 09:50:49,054 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -426378201, now seen corresponding path program 35 times [2020-10-12 09:50:49,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:49,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059349525] [2020-10-12 09:50:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:49,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:54,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:54,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 09:50:54,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:50:54,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5868 [2020-10-12 09:50:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:50:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:50:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:50:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:50:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:50:55,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:50:55,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:50:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 09:50:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:55,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:55,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 09:50:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:55,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:55,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:55,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 09:50:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 09:50:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 09:50:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:55,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:55,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-12 09:50:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:55,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:55,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-12 09:50:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:50:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:50:55,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:50:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:50:55,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:50:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:50:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:50:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:50:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:50:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 14 proven. 841 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2020-10-12 09:50:55,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059349525] [2020-10-12 09:50:55,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:50:55,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:50:55,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342386184] [2020-10-12 09:50:55,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:50:55,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:50:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:50:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:50:55,482 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 33 states. [2020-10-12 09:50:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:50:55,786 INFO L93 Difference]: Finished difference Result 324 states and 330 transitions. [2020-10-12 09:50:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:50:55,787 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 189 [2020-10-12 09:50:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:50:55,788 INFO L225 Difference]: With dead ends: 324 [2020-10-12 09:50:55,788 INFO L226 Difference]: Without dead ends: 199 [2020-10-12 09:50:55,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:50:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-12 09:50:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-10-12 09:50:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-12 09:50:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2020-10-12 09:50:55,806 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 189 [2020-10-12 09:50:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:50:55,806 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2020-10-12 09:50:55,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:50:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2020-10-12 09:50:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-12 09:50:55,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:50:55,807 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:50:55,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 09:50:55,808 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:50:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:50:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash -638654429, now seen corresponding path program 36 times [2020-10-12 09:50:55,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:50:55,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891609851] [2020-10-12 09:50:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:50:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:50:55,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:50:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:00,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:00,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 09:51:00,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:51:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-12 09:51:00,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:51:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 09:51:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:51:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:01,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 09:51:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:01,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:01,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 09:51:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:01,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 09:51:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 09:51:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-12 09:51:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:01,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:01,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 09:51:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:01,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 09:51:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:01,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:01,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1996 backedges. 14 proven. 900 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2020-10-12 09:51:01,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891609851] [2020-10-12 09:51:01,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:01,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:51:01,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959821123] [2020-10-12 09:51:01,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:51:01,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:01,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:51:01,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:51:01,619 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand 34 states. [2020-10-12 09:51:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:02,098 INFO L93 Difference]: Finished difference Result 330 states and 336 transitions. [2020-10-12 09:51:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:51:02,099 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 193 [2020-10-12 09:51:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:02,100 INFO L225 Difference]: With dead ends: 330 [2020-10-12 09:51:02,101 INFO L226 Difference]: Without dead ends: 203 [2020-10-12 09:51:02,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:51:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-12 09:51:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2020-10-12 09:51:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-12 09:51:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 204 transitions. [2020-10-12 09:51:02,118 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 204 transitions. Word has length 193 [2020-10-12 09:51:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:02,119 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 204 transitions. [2020-10-12 09:51:02,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:51:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 204 transitions. [2020-10-12 09:51:02,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-12 09:51:02,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:02,120 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:02,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 09:51:02,121 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:02,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:02,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1797678623, now seen corresponding path program 37 times [2020-10-12 09:51:02,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:02,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234678356] [2020-10-12 09:51:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:51:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:07,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:07,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:07,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 09:51:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:07,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:07,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:07,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 09:51:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:07,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:07,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 09:51:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:07,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:07,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 09:51:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:07,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:07,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-12 09:51:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:07,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:07,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-12 09:51:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:07,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:07,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 09:51:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:07,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:07,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:07,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:07,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:07,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2118 backedges. 14 proven. 961 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2020-10-12 09:51:07,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234678356] [2020-10-12 09:51:07,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:07,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:51:07,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026842309] [2020-10-12 09:51:07,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:51:07,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:07,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:51:07,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:51:07,851 INFO L87 Difference]: Start difference. First operand 201 states and 204 transitions. Second operand 35 states. [2020-10-12 09:51:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:08,343 INFO L93 Difference]: Finished difference Result 336 states and 342 transitions. [2020-10-12 09:51:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:51:08,344 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 197 [2020-10-12 09:51:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:08,345 INFO L225 Difference]: With dead ends: 336 [2020-10-12 09:51:08,346 INFO L226 Difference]: Without dead ends: 207 [2020-10-12 09:51:08,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:51:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-12 09:51:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-10-12 09:51:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-12 09:51:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2020-10-12 09:51:08,363 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 197 [2020-10-12 09:51:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:08,363 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2020-10-12 09:51:08,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:51:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2020-10-12 09:51:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-12 09:51:08,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:08,364 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:08,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 09:51:08,364 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:08,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:08,365 INFO L82 PathProgramCache]: Analyzing trace with hash 489125403, now seen corresponding path program 38 times [2020-10-12 09:51:08,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:08,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243541790] [2020-10-12 09:51:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:13,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:13,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-12 09:51:13,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:51:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5129 [2020-10-12 09:51:13,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:51:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:51:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 09:51:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:14,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:14,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:14,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 09:51:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:14,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:14,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 09:51:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:14,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:14,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-12 09:51:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:14,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:14,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 09:51:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:14,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:14,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 09:51:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:14,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:14,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-12 09:51:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:14,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 14 proven. 1024 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-12 09:51:14,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243541790] [2020-10-12 09:51:14,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:14,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:51:14,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527995380] [2020-10-12 09:51:14,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:51:14,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:51:14,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:51:14,239 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand 36 states. [2020-10-12 09:51:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:14,659 INFO L93 Difference]: Finished difference Result 342 states and 348 transitions. [2020-10-12 09:51:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:51:14,660 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 201 [2020-10-12 09:51:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:14,661 INFO L225 Difference]: With dead ends: 342 [2020-10-12 09:51:14,662 INFO L226 Difference]: Without dead ends: 211 [2020-10-12 09:51:14,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:51:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-12 09:51:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-10-12 09:51:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-12 09:51:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2020-10-12 09:51:14,680 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 201 [2020-10-12 09:51:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:14,681 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2020-10-12 09:51:14,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:51:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2020-10-12 09:51:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 09:51:14,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:14,682 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:14,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 09:51:14,682 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:14,683 INFO L82 PathProgramCache]: Analyzing trace with hash -195225577, now seen corresponding path program 39 times [2020-10-12 09:51:14,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:14,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662079407] [2020-10-12 09:51:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:19,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:19,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-12 09:51:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:51:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 09:51:19,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:51:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:51:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:20,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 09:51:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:20,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:20,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 09:51:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:20,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:20,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 09:51:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:20,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-12 09:51:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:20,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:20,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-12 09:51:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:20,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 09:51:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-12 09:51:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:20,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:20,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:20,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:20,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:20,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:20,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2374 backedges. 14 proven. 1089 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2020-10-12 09:51:20,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662079407] [2020-10-12 09:51:20,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:20,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:51:20,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141359952] [2020-10-12 09:51:20,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:51:20,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:51:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:51:20,473 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand 37 states. [2020-10-12 09:51:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:20,943 INFO L93 Difference]: Finished difference Result 348 states and 354 transitions. [2020-10-12 09:51:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:51:20,944 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 205 [2020-10-12 09:51:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:20,945 INFO L225 Difference]: With dead ends: 348 [2020-10-12 09:51:20,945 INFO L226 Difference]: Without dead ends: 215 [2020-10-12 09:51:20,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:51:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-12 09:51:20,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-10-12 09:51:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-12 09:51:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 216 transitions. [2020-10-12 09:51:20,970 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 216 transitions. Word has length 205 [2020-10-12 09:51:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:20,970 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 216 transitions. [2020-10-12 09:51:20,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:51:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 216 transitions. [2020-10-12 09:51:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 09:51:20,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:20,972 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:20,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 09:51:20,972 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:20,972 INFO L82 PathProgramCache]: Analyzing trace with hash -156087277, now seen corresponding path program 40 times [2020-10-12 09:51:20,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:20,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693753047] [2020-10-12 09:51:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-12 09:51:26,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:51:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 09:51:26,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:51:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 09:51:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:51:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:26,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:26,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 09:51:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 09:51:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:26,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:26,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-12 09:51:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 09:51:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:26,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:26,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:26,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 09:51:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-12 09:51:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 09:51:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:26,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2508 backedges. 14 proven. 1156 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2020-10-12 09:51:26,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693753047] [2020-10-12 09:51:26,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:26,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 09:51:26,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676863630] [2020-10-12 09:51:26,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 09:51:26,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:26,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 09:51:26,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:51:26,816 INFO L87 Difference]: Start difference. First operand 213 states and 216 transitions. Second operand 38 states. [2020-10-12 09:51:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:27,310 INFO L93 Difference]: Finished difference Result 354 states and 360 transitions. [2020-10-12 09:51:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 09:51:27,311 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 209 [2020-10-12 09:51:27,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:27,313 INFO L225 Difference]: With dead ends: 354 [2020-10-12 09:51:27,313 INFO L226 Difference]: Without dead ends: 219 [2020-10-12 09:51:27,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:51:27,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-12 09:51:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2020-10-12 09:51:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-12 09:51:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 220 transitions. [2020-10-12 09:51:27,338 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 220 transitions. Word has length 209 [2020-10-12 09:51:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:27,338 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 220 transitions. [2020-10-12 09:51:27,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 09:51:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 220 transitions. [2020-10-12 09:51:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-12 09:51:27,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:27,340 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:27,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 09:51:27,340 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:27,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1416490481, now seen corresponding path program 41 times [2020-10-12 09:51:27,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:27,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825496023] [2020-10-12 09:51:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:27,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-12 09:51:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:51:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 09:51:32,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:51:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:51:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:51:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:33,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:33,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 09:51:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 09:51:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-12 09:51:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:33,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:33,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-12 09:51:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:33,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:33,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:33,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 09:51:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:33,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-12 09:51:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:33,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:33,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-12 09:51:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:33,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 14 proven. 1225 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2020-10-12 09:51:33,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825496023] [2020-10-12 09:51:33,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:33,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 09:51:33,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795663311] [2020-10-12 09:51:33,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 09:51:33,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:33,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 09:51:33,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:51:33,247 INFO L87 Difference]: Start difference. First operand 217 states and 220 transitions. Second operand 39 states. [2020-10-12 09:51:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:33,784 INFO L93 Difference]: Finished difference Result 360 states and 366 transitions. [2020-10-12 09:51:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 09:51:33,785 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 213 [2020-10-12 09:51:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:33,787 INFO L225 Difference]: With dead ends: 360 [2020-10-12 09:51:33,787 INFO L226 Difference]: Without dead ends: 223 [2020-10-12 09:51:33,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:51:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-12 09:51:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-10-12 09:51:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-12 09:51:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 224 transitions. [2020-10-12 09:51:33,813 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 224 transitions. Word has length 213 [2020-10-12 09:51:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:33,814 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 224 transitions. [2020-10-12 09:51:33,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 09:51:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 224 transitions. [2020-10-12 09:51:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-12 09:51:33,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:33,816 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:33,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 09:51:33,816 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:33,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:33,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1679332853, now seen corresponding path program 42 times [2020-10-12 09:51:33,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:33,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959413111] [2020-10-12 09:51:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:38,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-12 09:51:38,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:51:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-12 09:51:38,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:51:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 09:51:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:51:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:51:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:51:39,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:51:39,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:51:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 09:51:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-12 09:51:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:39,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:39,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 09:51:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:39,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 09:51:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:39,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-12 09:51:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:39,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:39,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 09:51:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-12 09:51:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:51:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:51:39,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:51:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:51:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:51:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:51:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 09:51:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:51:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:51:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 14 proven. 1296 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2020-10-12 09:51:39,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959413111] [2020-10-12 09:51:39,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:51:39,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 09:51:39,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417675551] [2020-10-12 09:51:39,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 09:51:39,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:51:39,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 09:51:39,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:51:39,814 INFO L87 Difference]: Start difference. First operand 221 states and 224 transitions. Second operand 40 states. [2020-10-12 09:51:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:51:40,262 INFO L93 Difference]: Finished difference Result 366 states and 372 transitions. [2020-10-12 09:51:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 09:51:40,263 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 217 [2020-10-12 09:51:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:51:40,265 INFO L225 Difference]: With dead ends: 366 [2020-10-12 09:51:40,265 INFO L226 Difference]: Without dead ends: 227 [2020-10-12 09:51:40,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:51:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-12 09:51:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2020-10-12 09:51:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-12 09:51:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2020-10-12 09:51:40,302 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 217 [2020-10-12 09:51:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:51:40,303 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 228 transitions. [2020-10-12 09:51:40,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 09:51:40,303 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 228 transitions. [2020-10-12 09:51:40,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 09:51:40,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:51:40,305 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:51:40,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 09:51:40,306 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:51:40,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:51:40,306 INFO L82 PathProgramCache]: Analyzing trace with hash -769829881, now seen corresponding path program 43 times [2020-10-12 09:51:40,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:51:40,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099114903] [2020-10-12 09:51:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:51:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:51:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:51:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking...