/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/eca-rers2012/Problem15_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:21:28,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:21:28,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:21:28,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:21:28,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:21:28,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:21:28,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:21:28,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:21:28,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:21:28,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:21:28,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:21:28,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:21:28,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:21:28,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:21:28,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:21:28,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:21:28,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:21:28,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:21:28,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:21:28,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:21:28,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:21:28,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:21:28,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:21:28,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:21:28,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:21:28,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:21:28,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:21:28,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:21:28,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:21:28,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:21:28,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:21:28,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:21:28,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:21:28,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:21:28,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:21:28,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:21:28,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:21:28,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:21:28,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:21:28,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:21:28,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:21:28,502 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 14:21:28,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:21:28,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:21:28,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:21:28,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:21:28,550 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:21:28,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:21:28,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:21:28,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:21:28,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:21:28,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:21:28,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:21:28,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:21:28,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:21:28,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:21:28,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:21:28,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:21:28,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:21:28,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:21:28,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:21:28,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:21:28,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:21:28,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:21:28,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:21:28,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:21:28,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:21:28,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:21:28,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:21:28,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:21:28,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:21:28,555 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 14:21:28,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:21:28,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:21:28,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:21:28,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:21:28,894 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:21:28,895 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-12 14:21:28,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb4bf9ac/10f5f811e4054c82b3cc63f3b5903e82/FLAGc761ba6f2 [2020-10-12 14:21:29,683 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:21:29,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-12 14:21:29,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb4bf9ac/10f5f811e4054c82b3cc63f3b5903e82/FLAGc761ba6f2 [2020-10-12 14:21:29,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bb4bf9ac/10f5f811e4054c82b3cc63f3b5903e82 [2020-10-12 14:21:29,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:21:29,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:21:29,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:21:29,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:21:29,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:21:29,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:21:29" (1/1) ... [2020-10-12 14:21:29,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8874c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:29, skipping insertion in model container [2020-10-12 14:21:29,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:21:29" (1/1) ... [2020-10-12 14:21:29,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:21:29,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:21:31,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:21:31,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:21:31,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:21:31,457 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:21:31,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31 WrapperNode [2020-10-12 14:21:31,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:21:31,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:21:31,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:21:31,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:21:31,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (1/1) ... [2020-10-12 14:21:31,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (1/1) ... [2020-10-12 14:21:31,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (1/1) ... [2020-10-12 14:21:31,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (1/1) ... [2020-10-12 14:21:31,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (1/1) ... [2020-10-12 14:21:31,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (1/1) ... [2020-10-12 14:21:31,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (1/1) ... [2020-10-12 14:21:31,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:21:31,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:21:31,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:21:31,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:21:31,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (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 14:21:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:21:31,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:21:31,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:21:31,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:21:31,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:21:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:21:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:21:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:21:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:21:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:21:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:21:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:21:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:21:38,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:21:38,090 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:21:38,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:21:38 BoogieIcfgContainer [2020-10-12 14:21:38,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:21:38,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:21:38,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:21:38,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:21:38,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:21:29" (1/3) ... [2020-10-12 14:21:38,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405cedd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:21:38, skipping insertion in model container [2020-10-12 14:21:38,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:21:31" (2/3) ... [2020-10-12 14:21:38,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405cedd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:21:38, skipping insertion in model container [2020-10-12 14:21:38,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:21:38" (3/3) ... [2020-10-12 14:21:38,114 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label58.c [2020-10-12 14:21:38,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:21:38,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:21:38,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:21:38,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:21:38,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:21:38,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:21:38,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:21:38,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:21:38,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:21:38,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:21:38,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:21:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:21:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 14:21:38,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:38,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:38,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:38,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2072012024, now seen corresponding path program 1 times [2020-10-12 14:21:38,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:38,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41375858] [2020-10-12 14:21:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:39,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:39,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 14:21:39,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-12 14:21:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:21:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:21:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:21:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:21:39,311 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-12 14:21:39,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:39,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:39,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:21:39,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:21:39,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:39,378 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 14:21:39,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41375858] [2020-10-12 14:21:39,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:21:39,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:21:39,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667124912] [2020-10-12 14:21:39,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:21:39,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:39,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:21:39,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:21:39,412 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:21:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:45,940 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-12 14:21:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:21:45,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-12 14:21:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:45,975 INFO L225 Difference]: With dead ends: 1199 [2020-10-12 14:21:45,975 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 14:21:45,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:21:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 14:21:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-12 14:21:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:21:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-12 14:21:46,129 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 56 [2020-10-12 14:21:46,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:46,131 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-12 14:21:46,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:21:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-12 14:21:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 14:21:46,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:46,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:46,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:21:46,153 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:46,154 INFO L82 PathProgramCache]: Analyzing trace with hash -677211220, now seen corresponding path program 1 times [2020-10-12 14:21:46,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:46,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346473305] [2020-10-12 14:21:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:49,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:49,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 14:21:49,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:21:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2786 [2020-10-12 14:21:49,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:21:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 14:21:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 14:21:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:49,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:21:49,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:49,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:21:49,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 14:21:49,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:21:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:21:49,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346473305] [2020-10-12 14:21:49,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:49,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:21:49,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320712206] [2020-10-12 14:21:49,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:21:49,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:49,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:21:49,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:21:49,514 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-12 14:21:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:59,530 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-12 14:21:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:21:59,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-12 14:21:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:59,537 INFO L225 Difference]: With dead ends: 1507 [2020-10-12 14:21:59,537 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 14:21:59,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:21:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 14:21:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-12 14:21:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:21:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-12 14:21:59,575 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 125 [2020-10-12 14:21:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:59,576 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-12 14:21:59,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:21:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-12 14:21:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 14:21:59,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:59,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:59,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:21:59,579 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:59,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1765730893, now seen corresponding path program 1 times [2020-10-12 14:21:59,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:59,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137305848] [2020-10-12 14:21:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:00,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:00,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 14:22:00,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:22:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-10-12 14:22:00,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:22:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:22:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:22:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:00,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:00,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:00,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:22:00,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:22:00,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:22:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 14:22:01,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:22:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:22:01,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137305848] [2020-10-12 14:22:01,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:22:01,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:22:01,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699857630] [2020-10-12 14:22:01,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:22:01,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:01,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:22:01,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:22:01,399 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 7 states. [2020-10-12 14:22:10,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:10,262 INFO L93 Difference]: Finished difference Result 1741 states and 2310 transitions. [2020-10-12 14:22:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:22:10,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-12 14:22:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:10,275 INFO L225 Difference]: With dead ends: 1741 [2020-10-12 14:22:10,276 INFO L226 Difference]: Without dead ends: 1056 [2020-10-12 14:22:10,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:22:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-12 14:22:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1009. [2020-10-12 14:22:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-12 14:22:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1254 transitions. [2020-10-12 14:22:10,335 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1254 transitions. Word has length 136 [2020-10-12 14:22:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:10,335 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1254 transitions. [2020-10-12 14:22:10,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:22:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1254 transitions. [2020-10-12 14:22:10,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-12 14:22:10,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:10,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:10,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:22:10,391 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:10,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1595373245, now seen corresponding path program 1 times [2020-10-12 14:22:10,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:10,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417908702] [2020-10-12 14:22:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:13,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:13,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-12 14:22:13,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:22:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-10-12 14:22:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:22:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:22:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 14:22:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:13,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:13,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:13,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:13,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:22:13,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:22:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:22:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:22:13,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-12 14:22:13,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:22:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:22:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:22:14,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417908702] [2020-10-12 14:22:14,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:14,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:22:14,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001911175] [2020-10-12 14:22:14,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:22:14,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:14,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:22:14,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:22:14,964 INFO L87 Difference]: Start difference. First operand 1009 states and 1254 transitions. Second operand 9 states. [2020-10-12 14:22:23,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:23,385 INFO L93 Difference]: Finished difference Result 1747 states and 2238 transitions. [2020-10-12 14:22:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:22:23,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 293 [2020-10-12 14:22:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:23,394 INFO L225 Difference]: With dead ends: 1747 [2020-10-12 14:22:23,395 INFO L226 Difference]: Without dead ends: 1014 [2020-10-12 14:22:23,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:22:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-12 14:22:23,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1003. [2020-10-12 14:22:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-12 14:22:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1245 transitions. [2020-10-12 14:22:23,439 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1245 transitions. Word has length 293 [2020-10-12 14:22:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:23,441 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1245 transitions. [2020-10-12 14:22:23,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:22:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1245 transitions. [2020-10-12 14:22:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-12 14:22:23,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:23,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:23,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:22:23,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1267802042, now seen corresponding path program 1 times [2020-10-12 14:22:23,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:23,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816722309] [2020-10-12 14:22:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:26,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-12 14:22:26,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:22:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2776 [2020-10-12 14:22:26,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-12 14:22:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 14:22:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:26,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:26,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:26,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:22:26,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:26,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:22:26,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 14:22:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:22:26,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:22:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:26,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:26,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:22:26,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:26,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:22:26,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:22:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 14:22:26,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816722309] [2020-10-12 14:22:26,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:26,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:22:26,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152722982] [2020-10-12 14:22:26,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:22:27,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:27,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:22:27,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:22:27,002 INFO L87 Difference]: Start difference. First operand 1003 states and 1245 transitions. Second operand 5 states. [2020-10-12 14:22:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:32,988 INFO L93 Difference]: Finished difference Result 2327 states and 3035 transitions. [2020-10-12 14:22:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:22:32,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 410 [2020-10-12 14:22:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:33,003 INFO L225 Difference]: With dead ends: 2327 [2020-10-12 14:22:33,003 INFO L226 Difference]: Without dead ends: 1637 [2020-10-12 14:22:33,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:22:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-10-12 14:22:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1635. [2020-10-12 14:22:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1635 states. [2020-10-12 14:22:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1927 transitions. [2020-10-12 14:22:33,077 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1927 transitions. Word has length 410 [2020-10-12 14:22:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:33,080 INFO L479 AbstractCegarLoop]: Abstraction has 1635 states and 1927 transitions. [2020-10-12 14:22:33,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:22:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1927 transitions. [2020-10-12 14:22:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-12 14:22:33,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:33,092 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:33,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:22:33,093 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:33,093 INFO L82 PathProgramCache]: Analyzing trace with hash -461663374, now seen corresponding path program 1 times [2020-10-12 14:22:33,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:33,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437269066] [2020-10-12 14:22:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:35,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:35,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-12 14:22:35,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:22:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2368 [2020-10-12 14:22:35,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-12 14:22:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 14:22:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:22:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:35,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:22:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:22:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:35,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:22:35,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 14:22:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:22:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:36,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:36,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 14:22:36,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 14:22:36,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:22:36,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-12 14:22:36,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437269066] [2020-10-12 14:22:36,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:36,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:22:36,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422087442] [2020-10-12 14:22:36,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:22:36,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:36,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:22:36,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:22:36,669 INFO L87 Difference]: Start difference. First operand 1635 states and 1927 transitions. Second operand 5 states. [2020-10-12 14:22:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:44,072 INFO L93 Difference]: Finished difference Result 3593 states and 4422 transitions. [2020-10-12 14:22:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:22:44,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-10-12 14:22:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:44,084 INFO L225 Difference]: With dead ends: 3593 [2020-10-12 14:22:44,085 INFO L226 Difference]: Without dead ends: 2271 [2020-10-12 14:22:44,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:22:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-10-12 14:22:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2268. [2020-10-12 14:22:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2268 states. [2020-10-12 14:22:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 2629 transitions. [2020-10-12 14:22:44,144 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 2629 transitions. Word has length 415 [2020-10-12 14:22:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:44,145 INFO L479 AbstractCegarLoop]: Abstraction has 2268 states and 2629 transitions. [2020-10-12 14:22:44,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:22:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 2629 transitions. [2020-10-12 14:22:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-12 14:22:44,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:44,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:44,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:22:44,150 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash -513087024, now seen corresponding path program 1 times [2020-10-12 14:22:44,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:44,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480303566] [2020-10-12 14:22:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:46,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:46,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-12 14:22:46,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:22:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2400 [2020-10-12 14:22:46,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:22:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 14:22:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:46,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:46,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:46,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:22:46,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:46,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:46,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:22:46,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:46,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 14:22:46,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:46,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:22:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:47,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:47,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:22:47,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 14:22:47,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:22:47,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:22:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 14:22:47,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480303566] [2020-10-12 14:22:47,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:47,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:22:47,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496255248] [2020-10-12 14:22:47,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:22:47,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:47,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:22:47,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:22:47,631 INFO L87 Difference]: Start difference. First operand 2268 states and 2629 transitions. Second operand 6 states. [2020-10-12 14:22:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:58,260 INFO L93 Difference]: Finished difference Result 4846 states and 5815 transitions. [2020-10-12 14:22:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:22:58,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 441 [2020-10-12 14:22:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:58,279 INFO L225 Difference]: With dead ends: 4846 [2020-10-12 14:22:58,280 INFO L226 Difference]: Without dead ends: 2891 [2020-10-12 14:22:58,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:22:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-10-12 14:22:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2891. [2020-10-12 14:22:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2891 states. [2020-10-12 14:22:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3394 transitions. [2020-10-12 14:22:58,384 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3394 transitions. Word has length 441 [2020-10-12 14:22:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:58,385 INFO L479 AbstractCegarLoop]: Abstraction has 2891 states and 3394 transitions. [2020-10-12 14:22:58,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:22:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3394 transitions. [2020-10-12 14:22:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-12 14:22:58,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:58,423 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:58,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:22:58,424 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:58,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1974522633, now seen corresponding path program 1 times [2020-10-12 14:22:58,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:58,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791526088] [2020-10-12 14:22:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:03,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:03,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-12 14:23:03,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:23:03,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 14:23:03,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:23:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:23:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 14:23:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:03,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:03,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:23:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:03,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:03,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:03,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:23:03,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:23:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:23:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:04,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:04,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:23:04,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:04,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:23:04,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:23:04,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:04,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:23:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:04,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:04,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:23:04,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:23:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 14:23:04,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:23:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 252 proven. 50 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:23:04,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791526088] [2020-10-12 14:23:04,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:04,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:23:04,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087210745] [2020-10-12 14:23:04,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:23:04,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:23:04,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:23:04,499 INFO L87 Difference]: Start difference. First operand 2891 states and 3394 transitions. Second operand 7 states. [2020-10-12 14:23:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:12,856 INFO L93 Difference]: Finished difference Result 6835 states and 8524 transitions. [2020-10-12 14:23:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:23:12,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-12 14:23:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:12,880 INFO L225 Difference]: With dead ends: 6835 [2020-10-12 14:23:12,881 INFO L226 Difference]: Without dead ends: 4257 [2020-10-12 14:23:12,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:23:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2020-10-12 14:23:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 4207. [2020-10-12 14:23:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4207 states. [2020-10-12 14:23:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 4986 transitions. [2020-10-12 14:23:13,002 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 4986 transitions. Word has length 520 [2020-10-12 14:23:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:13,003 INFO L479 AbstractCegarLoop]: Abstraction has 4207 states and 4986 transitions. [2020-10-12 14:23:13,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:23:13,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 4986 transitions. [2020-10-12 14:23:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-12 14:23:13,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:13,014 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:23:13,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:23:13,015 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1710566881, now seen corresponding path program 1 times [2020-10-12 14:23:13,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:13,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813958236] [2020-10-12 14:23:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:15,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:18,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-12 14:23:18,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:23:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 14:23:18,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:23:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:23:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 468 [2020-10-12 14:23:18,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:18,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:18,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:18,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:23:18,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:23:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:18,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:18,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:23:18,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-12 14:23:18,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:18,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:23:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:23:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:19,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:19,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:23:19,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 14:23:19,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:23:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:23:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-12 14:23:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:19,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:19,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:23:19,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:23:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 14:23:19,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:23:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 186 proven. 260 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 14:23:20,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813958236] [2020-10-12 14:23:20,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:20,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:23:20,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726054094] [2020-10-12 14:23:20,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 14:23:20,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 14:23:20,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:23:20,201 INFO L87 Difference]: Start difference. First operand 4207 states and 4986 transitions. Second operand 11 states. [2020-10-12 14:23:24,321 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-12 14:23:25,756 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-12 14:23:26,255 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-12 14:23:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:33,936 INFO L93 Difference]: Finished difference Result 11086 states and 13757 transitions. [2020-10-12 14:23:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:23:33,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 556 [2020-10-12 14:23:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:33,972 INFO L225 Difference]: With dead ends: 11086 [2020-10-12 14:23:33,972 INFO L226 Difference]: Without dead ends: 7149 [2020-10-12 14:23:33,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2020-10-12 14:23:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7149 states. [2020-10-12 14:23:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7149 to 6748. [2020-10-12 14:23:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6748 states. [2020-10-12 14:23:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 8188 transitions. [2020-10-12 14:23:34,227 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 8188 transitions. Word has length 556 [2020-10-12 14:23:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:34,228 INFO L479 AbstractCegarLoop]: Abstraction has 6748 states and 8188 transitions. [2020-10-12 14:23:34,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 14:23:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 8188 transitions. [2020-10-12 14:23:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-12 14:23:34,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:34,247 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:23:34,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:23:34,248 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:34,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1491413, now seen corresponding path program 1 times [2020-10-12 14:23:34,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:34,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324966946] [2020-10-12 14:23:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:34,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:34,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:39,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:39,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 659 [2020-10-12 14:23:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:23:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5176 [2020-10-12 14:23:39,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:23:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 14:23:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:39,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:39,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:39,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:23:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:39,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:39,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:39,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:23:39,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 14:23:39,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:23:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:40,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:40,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:40,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:23:40,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 14:23:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:23:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:23:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:40,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:23:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:40,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-12 14:23:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:40,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:40,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 14:23:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 14:23:40,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-12 14:23:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 367 proven. 81 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2020-10-12 14:23:40,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324966946] [2020-10-12 14:23:40,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:40,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:23:40,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396844561] [2020-10-12 14:23:40,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:23:40,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:40,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:23:40,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:23:40,512 INFO L87 Difference]: Start difference. First operand 6748 states and 8188 transitions. Second operand 7 states. [2020-10-12 14:23:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:48,287 INFO L93 Difference]: Finished difference Result 14505 states and 17989 transitions. [2020-10-12 14:23:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:23:48,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 643 [2020-10-12 14:23:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:48,334 INFO L225 Difference]: With dead ends: 14505 [2020-10-12 14:23:48,335 INFO L226 Difference]: Without dead ends: 8070 [2020-10-12 14:23:48,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:23:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2020-10-12 14:23:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 8048. [2020-10-12 14:23:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8048 states. [2020-10-12 14:23:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8048 states to 8048 states and 9793 transitions. [2020-10-12 14:23:48,533 INFO L78 Accepts]: Start accepts. Automaton has 8048 states and 9793 transitions. Word has length 643 [2020-10-12 14:23:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:48,535 INFO L479 AbstractCegarLoop]: Abstraction has 8048 states and 9793 transitions. [2020-10-12 14:23:48,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:23:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8048 states and 9793 transitions. [2020-10-12 14:23:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-12 14:23:48,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:48,549 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:23:48,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:23:48,549 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash 453998965, now seen corresponding path program 1 times [2020-10-12 14:23:48,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:48,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859729096] [2020-10-12 14:23:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:53,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 660 [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 262 [2020-10-12 14:23:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:53,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:53,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:53,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:53,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:53,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:23:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:53,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:23:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:54,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:23:54,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:23:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:23:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:23:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:54,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:54,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 14:23:54,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:23:54,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:23:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:54,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-12 14:23:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:54,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 14:23:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 14:23:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 14:23:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 490 proven. 98 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-12 14:23:54,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859729096] [2020-10-12 14:23:54,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:54,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:23:54,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001216061] [2020-10-12 14:23:54,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:23:54,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:54,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:23:54,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:23:54,635 INFO L87 Difference]: Start difference. First operand 8048 states and 9793 transitions. Second operand 6 states. [2020-10-12 14:24:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:07,146 INFO L93 Difference]: Finished difference Result 17941 states and 23520 transitions. [2020-10-12 14:24:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:24:07,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 644 [2020-10-12 14:24:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:07,194 INFO L225 Difference]: With dead ends: 17941 [2020-10-12 14:24:07,194 INFO L226 Difference]: Without dead ends: 11447 [2020-10-12 14:24:07,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:24:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2020-10-12 14:24:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 11342. [2020-10-12 14:24:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11342 states. [2020-10-12 14:24:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11342 states to 11342 states and 14173 transitions. [2020-10-12 14:24:07,620 INFO L78 Accepts]: Start accepts. Automaton has 11342 states and 14173 transitions. Word has length 644 [2020-10-12 14:24:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:07,622 INFO L479 AbstractCegarLoop]: Abstraction has 11342 states and 14173 transitions. [2020-10-12 14:24:07,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:24:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 11342 states and 14173 transitions. [2020-10-12 14:24:07,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-12 14:24:07,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:07,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:24:07,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:24:07,651 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:07,651 INFO L82 PathProgramCache]: Analyzing trace with hash -764885428, now seen corresponding path program 1 times [2020-10-12 14:24:07,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:07,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653761338] [2020-10-12 14:24:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:12,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:12,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 705 [2020-10-12 14:24:12,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:24:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 14:24:12,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:24:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:24:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:13,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:13,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:24:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:24:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:13,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:24:13,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 14:24:13,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:24:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:24:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:13,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:13,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-12 14:24:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 14:24:13,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 14:24:13,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-12 14:24:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 312 proven. 218 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-10-12 14:24:14,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653761338] [2020-10-12 14:24:14,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:14,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:24:14,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20213566] [2020-10-12 14:24:14,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:24:14,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:14,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:24:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:24:14,242 INFO L87 Difference]: Start difference. First operand 11342 states and 14173 transitions. Second operand 7 states. [2020-10-12 14:24:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:24,484 INFO L93 Difference]: Finished difference Result 23668 states and 29612 transitions. [2020-10-12 14:24:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:24:24,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 689 [2020-10-12 14:24:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:24,554 INFO L225 Difference]: With dead ends: 23668 [2020-10-12 14:24:24,554 INFO L226 Difference]: Without dead ends: 12639 [2020-10-12 14:24:24,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:24:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12639 states. [2020-10-12 14:24:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12639 to 12607. [2020-10-12 14:24:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12607 states. [2020-10-12 14:24:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12607 states to 12607 states and 15522 transitions. [2020-10-12 14:24:24,950 INFO L78 Accepts]: Start accepts. Automaton has 12607 states and 15522 transitions. Word has length 689 [2020-10-12 14:24:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:24,951 INFO L479 AbstractCegarLoop]: Abstraction has 12607 states and 15522 transitions. [2020-10-12 14:24:24,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:24:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 12607 states and 15522 transitions. [2020-10-12 14:24:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-12 14:24:24,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:24,982 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:24:24,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:24:24,982 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1854606596, now seen corresponding path program 1 times [2020-10-12 14:24:24,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:24,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91143252] [2020-10-12 14:24:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:30,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:30,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 717 [2020-10-12 14:24:30,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:24:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 14:24:30,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 539 [2020-10-12 14:24:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 14:24:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:30,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:24:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:30,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:30,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:24:30,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 14:24:30,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:30,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:24:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:30,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:30,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:24:30,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:24:30,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:24:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:30,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:30,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:24:30,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 14:24:30,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 14:24:30,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-12 14:24:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:31,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:31,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 14:24:31,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:24:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-12 14:24:31,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 14:24:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 544 proven. 2 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-10-12 14:24:31,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91143252] [2020-10-12 14:24:31,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:31,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:24:31,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489755070] [2020-10-12 14:24:31,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:24:31,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:31,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:24:31,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:24:31,664 INFO L87 Difference]: Start difference. First operand 12607 states and 15522 transitions. Second operand 7 states. [2020-10-12 14:24:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:41,164 INFO L93 Difference]: Finished difference Result 23408 states and 29288 transitions. [2020-10-12 14:24:41,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:24:41,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 701 [2020-10-12 14:24:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:41,204 INFO L225 Difference]: With dead ends: 23408 [2020-10-12 14:24:41,205 INFO L226 Difference]: Without dead ends: 12646 [2020-10-12 14:24:41,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:24:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12646 states. [2020-10-12 14:24:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12646 to 12612. [2020-10-12 14:24:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12612 states. [2020-10-12 14:24:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12612 states to 12612 states and 15503 transitions. [2020-10-12 14:24:41,481 INFO L78 Accepts]: Start accepts. Automaton has 12612 states and 15503 transitions. Word has length 701 [2020-10-12 14:24:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:41,482 INFO L479 AbstractCegarLoop]: Abstraction has 12612 states and 15503 transitions. [2020-10-12 14:24:41,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:24:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 12612 states and 15503 transitions. [2020-10-12 14:24:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-12 14:24:41,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:41,504 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:24:41,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:24:41,505 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:41,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:41,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1286441630, now seen corresponding path program 1 times [2020-10-12 14:24:41,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:41,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001820745] [2020-10-12 14:24:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:46,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:46,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 743 [2020-10-12 14:24:46,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:24:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 14:24:46,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:24:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 565 [2020-10-12 14:24:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 14:24:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:46,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:46,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:24:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:46,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:24:46,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 14:24:46,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:46,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:46,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:46,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:24:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:24:47,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:24:47,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:47,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:24:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:47,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:47,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 14:24:47,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 14:24:47,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 14:24:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-12 14:24:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:47,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:47,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:47,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 14:24:47,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:24:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-12 14:24:47,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:24:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:47,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 14:24:47,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:24:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 544 proven. 2 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-12 14:24:48,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001820745] [2020-10-12 14:24:48,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:48,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:24:48,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260153591] [2020-10-12 14:24:48,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:24:48,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:48,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:24:48,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:24:48,845 INFO L87 Difference]: Start difference. First operand 12612 states and 15503 transitions. Second operand 8 states. [2020-10-12 14:24:52,530 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-12 14:24:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:58,729 INFO L93 Difference]: Finished difference Result 23745 states and 29532 transitions. [2020-10-12 14:24:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:24:58,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 727 [2020-10-12 14:24:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:58,779 INFO L225 Difference]: With dead ends: 23745 [2020-10-12 14:24:58,780 INFO L226 Difference]: Without dead ends: 12996 [2020-10-12 14:24:58,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:24:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12996 states. [2020-10-12 14:24:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12996 to 12922. [2020-10-12 14:24:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12922 states. [2020-10-12 14:24:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12922 states to 12922 states and 15820 transitions. [2020-10-12 14:24:59,054 INFO L78 Accepts]: Start accepts. Automaton has 12922 states and 15820 transitions. Word has length 727 [2020-10-12 14:24:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:59,055 INFO L479 AbstractCegarLoop]: Abstraction has 12922 states and 15820 transitions. [2020-10-12 14:24:59,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:24:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 12922 states and 15820 transitions. [2020-10-12 14:24:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2020-10-12 14:24:59,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:59,078 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:24:59,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 14:24:59,078 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:59,079 INFO L82 PathProgramCache]: Analyzing trace with hash 775680682, now seen corresponding path program 1 times [2020-10-12 14:24:59,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:59,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649830871] [2020-10-12 14:24:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:59,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:59,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:04,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 750 [2020-10-12 14:25:04,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 14:25:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 14:25:04,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:25:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 487 [2020-10-12 14:25:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-12 14:25:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:04,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:25:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:04,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:25:04,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:25:04,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:04,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:25:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:04,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:25:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 14:25:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:25:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:25:04,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:25:04,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:04,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:25:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:25:04,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 14:25:04,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:25:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:25:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-12 14:25:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 14:25:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:25:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-12 14:25:04,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:25:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-10-12 14:25:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:05,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:05,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 14:25:05,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:25:05,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 14:25:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 794 proven. 88 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-12 14:25:05,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649830871] [2020-10-12 14:25:05,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:25:05,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:25:05,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400460850] [2020-10-12 14:25:05,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:25:05,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:25:05,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:25:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:25:05,520 INFO L87 Difference]: Start difference. First operand 12922 states and 15820 transitions. Second operand 8 states.