/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=NARROWEST --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/Problem12_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:19:24,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:19:24,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:19:24,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:19:24,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:19:24,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:19:24,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:19:24,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:19:24,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:19:24,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:19:24,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:19:24,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:19:24,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:19:24,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:19:24,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:19:24,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:19:24,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:19:24,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:19:24,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:19:24,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:19:24,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:19:24,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:19:24,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:19:24,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:19:24,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:19:24,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:19:24,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:19:24,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:19:24,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:19:24,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:19:24,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:19:24,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:19:24,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:19:24,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:19:24,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:19:24,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:19:24,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:19:24,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:19:24,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:19:24,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:19:24,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:19:24,431 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 [2020-10-13 08:19:24,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:19:24,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:19:24,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:19:24,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:19:24,457 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:19:24,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:19:24,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:19:24,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:19:24,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:19:24,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:19:24,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:19:24,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:19:24,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:19:24,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:19:24,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:19:24,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:19:24,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:19:24,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:19:24,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:19:24,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:19:24,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:19:24,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:19:24,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:19:24,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:19:24,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:19:24,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:19:24,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:19:24,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:19:24,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:19:24,462 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:19:24,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:19:24,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:19:24,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:19:24,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:19:24,797 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:19:24,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-13 08:19:24,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e538da99/e50957c6af6d499a82c3b575545ec7b4/FLAG10c05463a [2020-10-13 08:19:25,728 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:19:25,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-13 08:19:25,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e538da99/e50957c6af6d499a82c3b575545ec7b4/FLAG10c05463a [2020-10-13 08:19:26,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e538da99/e50957c6af6d499a82c3b575545ec7b4 [2020-10-13 08:19:26,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:19:26,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:19:26,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:19:26,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:19:26,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:19:26,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:19:26" (1/1) ... [2020-10-13 08:19:26,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b03bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:26, skipping insertion in model container [2020-10-13 08:19:26,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:19:26" (1/1) ... [2020-10-13 08:19:26,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:19:26,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:19:27,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:19:28,006 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:19:28,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:19:28,770 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:19:28,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28 WrapperNode [2020-10-13 08:19:28,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:19:28,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:19:28,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:19:28,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:19:28,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (1/1) ... [2020-10-13 08:19:28,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (1/1) ... [2020-10-13 08:19:28,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (1/1) ... [2020-10-13 08:19:28,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (1/1) ... [2020-10-13 08:19:28,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (1/1) ... [2020-10-13 08:19:29,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (1/1) ... [2020-10-13 08:19:29,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (1/1) ... [2020-10-13 08:19:29,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:19:29,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:19:29,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:19:29,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:19:29,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (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 [2020-10-13 08:19:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:19:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:19:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:19:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:19:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:19:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:19:29,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:19:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:19:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:19:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:19:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:19:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:19:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:19:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:19:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:19:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:19:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:19:34,669 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:19:34,670 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:19:34,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:19:34 BoogieIcfgContainer [2020-10-13 08:19:34,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:19:34,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:19:34,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:19:34,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:19:34,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:19:26" (1/3) ... [2020-10-13 08:19:34,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b81796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:19:34, skipping insertion in model container [2020-10-13 08:19:34,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:19:28" (2/3) ... [2020-10-13 08:19:34,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b81796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:19:34, skipping insertion in model container [2020-10-13 08:19:34,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:19:34" (3/3) ... [2020-10-13 08:19:34,710 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label25.c [2020-10-13 08:19:34,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:19:34,745 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:19:34,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:19:34,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:19:34,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:19:34,818 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:19:34,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:19:34,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:19:34,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:19:34,819 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:19:34,819 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:19:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:19:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 08:19:34,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:34,898 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] [2020-10-13 08:19:34,899 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:34,911 INFO L82 PathProgramCache]: Analyzing trace with hash -996622542, now seen corresponding path program 1 times [2020-10-13 08:19:34,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:34,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021342159] [2020-10-13 08:19:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:35,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:35,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 08:19:35,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-13 08:19:35,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:19:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:19:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:19:35,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:19:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:35,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:35,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:35,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:35,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:19:35,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:35,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:19:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:19:35,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021342159] [2020-10-13 08:19:35,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:19:35,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:19:35,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834611060] [2020-10-13 08:19:35,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:19:35,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:35,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:19:35,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:19:35,830 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:19:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:44,319 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:19:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:44,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-13 08:19:44,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:44,353 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:19:44,353 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:19:44,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:19:44,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:19:44,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:19:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-13 08:19:44,509 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 23 [2020-10-13 08:19:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:44,510 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-13 08:19:44,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:19:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-13 08:19:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 08:19:44,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:44,515 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:19:44,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:19:44,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:44,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:44,516 INFO L82 PathProgramCache]: Analyzing trace with hash -828064321, now seen corresponding path program 1 times [2020-10-13 08:19:44,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:44,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575357495] [2020-10-13 08:19:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:45,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:19:45,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-13 08:19:45,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:19:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:19:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:45,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:45,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:45,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:19:45,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:45,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:45,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:45,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:19:45,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:45,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:19:45,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:19:45,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:19:45,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575357495] [2020-10-13 08:19:45,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:45,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:45,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293629035] [2020-10-13 08:19:45,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:45,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:45,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:45,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:45,562 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-13 08:19:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:56,716 INFO L93 Difference]: Finished difference Result 4675 states and 8270 transitions. [2020-10-13 08:19:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:19:56,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-13 08:19:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:56,736 INFO L225 Difference]: With dead ends: 4675 [2020-10-13 08:19:56,736 INFO L226 Difference]: Without dead ends: 3128 [2020-10-13 08:19:56,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:19:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-13 08:19:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3111. [2020-10-13 08:19:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-13 08:19:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4905 transitions. [2020-10-13 08:19:56,849 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4905 transitions. Word has length 92 [2020-10-13 08:19:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:56,850 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4905 transitions. [2020-10-13 08:19:56,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:19:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4905 transitions. [2020-10-13 08:19:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 08:19:56,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:56,864 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:19:56,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:19:56,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:56,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1021628326, now seen corresponding path program 1 times [2020-10-13 08:19:56,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:56,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433513442] [2020-10-13 08:19:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:57,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:19:57,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-13 08:19:57,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:19:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:19:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:57,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:57,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:57,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:19:57,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:57,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:57,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:57,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:57,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:19:57,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:19:57,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:19:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:19:57,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433513442] [2020-10-13 08:19:57,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:57,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:57,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165477488] [2020-10-13 08:19:58,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:58,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:58,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:58,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:58,001 INFO L87 Difference]: Start difference. First operand 3111 states and 4905 transitions. Second operand 5 states. [2020-10-13 08:20:08,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:08,854 INFO L93 Difference]: Finished difference Result 9346 states and 14957 transitions. [2020-10-13 08:20:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:08,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 08:20:08,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:08,895 INFO L225 Difference]: With dead ends: 9346 [2020-10-13 08:20:08,896 INFO L226 Difference]: Without dead ends: 6241 [2020-10-13 08:20:08,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:08,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2020-10-13 08:20:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6229. [2020-10-13 08:20:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6229 states. [2020-10-13 08:20:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 8863 transitions. [2020-10-13 08:20:09,085 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 8863 transitions. Word has length 93 [2020-10-13 08:20:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:09,086 INFO L479 AbstractCegarLoop]: Abstraction has 6229 states and 8863 transitions. [2020-10-13 08:20:09,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 8863 transitions. [2020-10-13 08:20:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 08:20:09,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:09,091 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:20:09,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:20:09,091 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:09,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1881741533, now seen corresponding path program 1 times [2020-10-13 08:20:09,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:09,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384902993] [2020-10-13 08:20:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:09,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:09,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:20:09,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:20:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-13 08:20:09,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 08:20:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:20:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:09,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:20:09,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:09,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:09,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:09,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:20:09,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:09,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:20:09,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:09,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:20:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:20:10,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384902993] [2020-10-13 08:20:10,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:10,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:20:10,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639840163] [2020-10-13 08:20:10,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:20:10,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:10,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:20:10,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:10,043 INFO L87 Difference]: Start difference. First operand 6229 states and 8863 transitions. Second operand 6 states. [2020-10-13 08:20:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:21,645 INFO L93 Difference]: Finished difference Result 15575 states and 23094 transitions. [2020-10-13 08:20:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:21,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-13 08:20:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:21,688 INFO L225 Difference]: With dead ends: 15575 [2020-10-13 08:20:21,688 INFO L226 Difference]: Without dead ends: 9352 [2020-10-13 08:20:21,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:20:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2020-10-13 08:20:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 9332. [2020-10-13 08:20:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-13 08:20:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 13397 transitions. [2020-10-13 08:20:21,936 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 13397 transitions. Word has length 94 [2020-10-13 08:20:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:21,937 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 13397 transitions. [2020-10-13 08:20:21,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:20:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 13397 transitions. [2020-10-13 08:20:21,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:20:21,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:21,946 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:20:21,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:20:21,946 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:21,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:21,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1111849118, now seen corresponding path program 1 times [2020-10-13 08:20:21,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:21,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032925669] [2020-10-13 08:20:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:22,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:22,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:20:22,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:20:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-13 08:20:22,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:20:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:20:22,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:22,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:22,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:22,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:22,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:20:22,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:22,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:22,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:22,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:20:22,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:20:22,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:20:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:20:22,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032925669] [2020-10-13 08:20:22,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:22,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:22,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210415736] [2020-10-13 08:20:22,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:22,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:22,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:22,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:22,960 INFO L87 Difference]: Start difference. First operand 9332 states and 13397 transitions. Second operand 5 states. [2020-10-13 08:20:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:33,330 INFO L93 Difference]: Finished difference Result 27976 states and 41251 transitions. [2020-10-13 08:20:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:33,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 08:20:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:33,401 INFO L225 Difference]: With dead ends: 27976 [2020-10-13 08:20:33,401 INFO L226 Difference]: Without dead ends: 18650 [2020-10-13 08:20:33,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18650 states. [2020-10-13 08:20:33,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18650 to 18638. [2020-10-13 08:20:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18638 states. [2020-10-13 08:20:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18638 states to 18638 states and 24519 transitions. [2020-10-13 08:20:33,912 INFO L78 Accepts]: Start accepts. Automaton has 18638 states and 24519 transitions. Word has length 111 [2020-10-13 08:20:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:33,913 INFO L479 AbstractCegarLoop]: Abstraction has 18638 states and 24519 transitions. [2020-10-13 08:20:33,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 18638 states and 24519 transitions. [2020-10-13 08:20:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 08:20:33,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:33,915 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:20:33,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:20:33,916 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1279454477, now seen corresponding path program 1 times [2020-10-13 08:20:33,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:33,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340982167] [2020-10-13 08:20:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:34,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:34,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:20:34,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:20:34,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-13 08:20:34,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 08:20:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:20:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:34,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:34,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:34,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:20:34,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:34,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:34,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:34,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 08:20:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:20:34,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 08:20:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:20:35,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340982167] [2020-10-13 08:20:35,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:35,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:35,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919972895] [2020-10-13 08:20:35,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:35,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:35,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:35,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:35,045 INFO L87 Difference]: Start difference. First operand 18638 states and 24519 transitions. Second operand 5 states. [2020-10-13 08:20:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:47,292 INFO L93 Difference]: Finished difference Result 54332 states and 73810 transitions. [2020-10-13 08:20:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:47,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-13 08:20:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:47,432 INFO L225 Difference]: With dead ends: 54332 [2020-10-13 08:20:47,432 INFO L226 Difference]: Without dead ends: 35700 [2020-10-13 08:20:47,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:20:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35700 states. [2020-10-13 08:20:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35700 to 35688. [2020-10-13 08:20:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35688 states. [2020-10-13 08:20:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35688 states to 35688 states and 46301 transitions. [2020-10-13 08:20:49,280 INFO L78 Accepts]: Start accepts. Automaton has 35688 states and 46301 transitions. Word has length 134 [2020-10-13 08:20:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:49,280 INFO L479 AbstractCegarLoop]: Abstraction has 35688 states and 46301 transitions. [2020-10-13 08:20:49,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 35688 states and 46301 transitions. [2020-10-13 08:20:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 08:20:49,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:49,285 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:20:49,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:20:49,286 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:49,286 INFO L82 PathProgramCache]: Analyzing trace with hash 883190242, now seen corresponding path program 1 times [2020-10-13 08:20:49,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:49,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784042362] [2020-10-13 08:20:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:51,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:51,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:20:51,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:20:51,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2592 [2020-10-13 08:20:51,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:51,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:20:51,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:20:51,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:51,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:51,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:20:52,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:20:52,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:52,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:52,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:20:52,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:52,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:20:52,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:52,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 08:20:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:52,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:52,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:20:52,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:20:52,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:20:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 08:20:52,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784042362] [2020-10-13 08:20:52,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:52,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:20:52,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499913417] [2020-10-13 08:20:52,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:20:52,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:52,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:20:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:20:52,179 INFO L87 Difference]: Start difference. First operand 35688 states and 46301 transitions. Second operand 5 states. [2020-10-13 08:21:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:05,381 INFO L93 Difference]: Finished difference Result 87627 states and 117458 transitions. [2020-10-13 08:21:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:05,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-13 08:21:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:05,602 INFO L225 Difference]: With dead ends: 87627 [2020-10-13 08:21:05,603 INFO L226 Difference]: Without dead ends: 51945 [2020-10-13 08:21:05,669 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 [2020-10-13 08:21:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51945 states. [2020-10-13 08:21:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51945 to 51933. [2020-10-13 08:21:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51933 states. [2020-10-13 08:21:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51933 states to 51933 states and 67325 transitions. [2020-10-13 08:21:06,929 INFO L78 Accepts]: Start accepts. Automaton has 51933 states and 67325 transitions. Word has length 169 [2020-10-13 08:21:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:06,930 INFO L479 AbstractCegarLoop]: Abstraction has 51933 states and 67325 transitions. [2020-10-13 08:21:06,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 51933 states and 67325 transitions. [2020-10-13 08:21:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-13 08:21:07,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:07,016 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:07,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:21:07,017 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:07,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1103871796, now seen corresponding path program 1 times [2020-10-13 08:21:07,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:07,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538051659] [2020-10-13 08:21:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:12,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:12,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-13 08:21:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:21:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-13 08:21:12,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 509 [2020-10-13 08:21:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:21:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:12,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:21:12,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:12,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:21:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:21:12,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:12,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:21:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:12,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:12,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-13 08:21:12,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-13 08:21:12,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 417 [2020-10-13 08:21:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:13,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:21:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:13,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:13,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:21:13,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-13 08:21:13,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:21:13,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:21:14,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538051659] [2020-10-13 08:21:14,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:14,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:14,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445187704] [2020-10-13 08:21:14,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:14,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:14,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:14,468 INFO L87 Difference]: Start difference. First operand 51933 states and 67325 transitions. Second operand 5 states. [2020-10-13 08:21:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:30,875 INFO L93 Difference]: Finished difference Result 121665 states and 161129 transitions. [2020-10-13 08:21:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:30,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 521 [2020-10-13 08:21:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:31,165 INFO L225 Difference]: With dead ends: 121665 [2020-10-13 08:21:31,166 INFO L226 Difference]: Without dead ends: 69738 [2020-10-13 08:21:31,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:21:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69738 states. [2020-10-13 08:21:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69738 to 69726. [2020-10-13 08:21:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69726 states. [2020-10-13 08:21:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69726 states to 69726 states and 92270 transitions. [2020-10-13 08:21:33,018 INFO L78 Accepts]: Start accepts. Automaton has 69726 states and 92270 transitions. Word has length 521 [2020-10-13 08:21:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:33,019 INFO L479 AbstractCegarLoop]: Abstraction has 69726 states and 92270 transitions. [2020-10-13 08:21:33,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 69726 states and 92270 transitions. [2020-10-13 08:21:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2020-10-13 08:21:33,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:33,208 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:33,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:21:33,208 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash -821181474, now seen corresponding path program 1 times [2020-10-13 08:21:33,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:33,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668874696] [2020-10-13 08:21:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:38,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:38,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 857 [2020-10-13 08:21:38,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:21:38,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-13 08:21:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:21:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:21:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:21:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:38,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:21:38,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:21:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:21:38,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 08:21:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:21:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:21:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:21:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:39,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:39,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:39,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 740 [2020-10-13 08:21:39,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-13 08:21:39,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 737 [2020-10-13 08:21:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:21:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-13 08:21:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:21:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:21:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:40,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 08:21:40,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:21:40,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:40,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:21:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 32 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:21:41,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668874696] [2020-10-13 08:21:41,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:41,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:21:41,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039451296] [2020-10-13 08:21:41,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:21:41,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:41,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:21:41,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:21:41,153 INFO L87 Difference]: Start difference. First operand 69726 states and 92270 transitions. Second operand 7 states. [2020-10-13 08:22:02,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:02,440 INFO L93 Difference]: Finished difference Result 161087 states and 221977 transitions. [2020-10-13 08:22:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:22:02,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 841 [2020-10-13 08:22:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:02,900 INFO L225 Difference]: With dead ends: 161087 [2020-10-13 08:22:02,900 INFO L226 Difference]: Without dead ends: 91367 [2020-10-13 08:22:03,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:22:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91367 states. [2020-10-13 08:22:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91367 to 91296. [2020-10-13 08:22:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91296 states. [2020-10-13 08:22:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91296 states to 91296 states and 122532 transitions. [2020-10-13 08:22:04,898 INFO L78 Accepts]: Start accepts. Automaton has 91296 states and 122532 transitions. Word has length 841 [2020-10-13 08:22:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:04,898 INFO L479 AbstractCegarLoop]: Abstraction has 91296 states and 122532 transitions. [2020-10-13 08:22:04,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:22:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 91296 states and 122532 transitions. [2020-10-13 08:22:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2020-10-13 08:22:05,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:05,031 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:05,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:22:05,032 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:05,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:05,032 INFO L82 PathProgramCache]: Analyzing trace with hash 79958038, now seen corresponding path program 1 times [2020-10-13 08:22:05,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:05,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249970128] [2020-10-13 08:22:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:10,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:10,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 861 [2020-10-13 08:22:10,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-13 08:22:10,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:22:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:22:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 08:22:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:10,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:10,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:22:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:22:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:10,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:10,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:22:10,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:22:10,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:22:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:22:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 08:22:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:10,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:10,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 740 [2020-10-13 08:22:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 08:22:10,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 737 [2020-10-13 08:22:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:22:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:11,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-13 08:22:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 08:22:11,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:22:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:11,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:11,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:11,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 08:22:11,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:22:11,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:11,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 32 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:22:12,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249970128] [2020-10-13 08:22:12,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:12,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:22:12,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427398458] [2020-10-13 08:22:12,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:22:12,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:12,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:22:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:22:12,135 INFO L87 Difference]: Start difference. First operand 91296 states and 122532 transitions. Second operand 7 states. [2020-10-13 08:22:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:35,127 INFO L93 Difference]: Finished difference Result 211975 states and 291635 transitions. [2020-10-13 08:22:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:22:35,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 845 [2020-10-13 08:22:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:35,431 INFO L225 Difference]: With dead ends: 211975 [2020-10-13 08:22:35,432 INFO L226 Difference]: Without dead ends: 121452 [2020-10-13 08:22:35,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:22:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121452 states. [2020-10-13 08:22:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121452 to 118352. [2020-10-13 08:22:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118352 states. [2020-10-13 08:22:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118352 states to 118352 states and 159257 transitions. [2020-10-13 08:22:37,512 INFO L78 Accepts]: Start accepts. Automaton has 118352 states and 159257 transitions. Word has length 845 [2020-10-13 08:22:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:37,512 INFO L479 AbstractCegarLoop]: Abstraction has 118352 states and 159257 transitions. [2020-10-13 08:22:37,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:22:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 118352 states and 159257 transitions. [2020-10-13 08:22:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-13 08:22:37,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:37,648 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:37,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:22:37,649 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash 613588334, now seen corresponding path program 1 times [2020-10-13 08:22:37,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:37,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573620730] [2020-10-13 08:22:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 965 [2020-10-13 08:22:42,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:22:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 08:22:42,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:22:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:22:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:22:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:43,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:22:43,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:22:43,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:22:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:22:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:22:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 08:22:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:22:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:22:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 08:22:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:43,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 740 [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 737 [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:22:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:43,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:44,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-13 08:22:44,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:44,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:22:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:44,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:22:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:44,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:44,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 08:22:44,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:22:44,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 124 proven. 113 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:22:47,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573620730] [2020-10-13 08:22:47,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:47,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:22:47,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071678709] [2020-10-13 08:22:47,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:22:47,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:47,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:22:47,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:47,569 INFO L87 Difference]: Start difference. First operand 118352 states and 159257 transitions. Second operand 6 states. [2020-10-13 08:23:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:01,984 INFO L93 Difference]: Finished difference Result 236166 states and 318643 transitions. [2020-10-13 08:23:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:23:01,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 947 [2020-10-13 08:23:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:02,308 INFO L225 Difference]: With dead ends: 236166 [2020-10-13 08:23:02,308 INFO L226 Difference]: Without dead ends: 118283 [2020-10-13 08:23:02,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72