/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/Problem13_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:38:22,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:38:22,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:38:22,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:38:22,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:38:22,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:38:22,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:38:22,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:38:22,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:38:22,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:38:22,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:38:22,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:38:22,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:38:22,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:38:22,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:38:22,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:38:22,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:38:22,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:38:22,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:38:22,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:38:22,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:38:22,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:38:22,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:38:22,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:38:22,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:38:22,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:38:22,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:38:22,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:38:22,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:38:22,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:38:22,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:38:22,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:38:22,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:38:22,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:38:22,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:38:22,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:38:22,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:38:22,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:38:22,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:38:22,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:38:22,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:38:22,434 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 08:38:22,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:38:22,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:38:22,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:38:22,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:38:22,470 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:38:22,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:38:22,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:38:22,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:38:22,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:38:22,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:38:22,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:38:22,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:38:22,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:38:22,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:38:22,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:38:22,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:38:22,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:38:22,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:38:22,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:38:22,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:38:22,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:38:22,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:38:22,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:38:22,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:38:22,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:38:22,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:38:22,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:38:22,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:38:22,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:38:22,475 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 08:38:22,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:38:22,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:38:22,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:38:22,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:38:22,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:38:22,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label35.c [2020-10-13 08:38:22,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f035e46/1fcb880ee7aa4d5fa79e1c09e01a70be/FLAG83b8486e4 [2020-10-13 08:38:23,608 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:38:23,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label35.c [2020-10-13 08:38:23,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f035e46/1fcb880ee7aa4d5fa79e1c09e01a70be/FLAG83b8486e4 [2020-10-13 08:38:23,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f035e46/1fcb880ee7aa4d5fa79e1c09e01a70be [2020-10-13 08:38:23,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:38:23,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:38:23,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:38:23,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:38:23,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:38:23,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:38:23" (1/1) ... [2020-10-13 08:38:23,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:23, skipping insertion in model container [2020-10-13 08:38:23,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:38:23" (1/1) ... [2020-10-13 08:38:23,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:38:23,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:38:25,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:38:25,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:38:26,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:38:26,601 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:38:26,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26 WrapperNode [2020-10-13 08:38:26,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:38:26,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:38:26,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:38:26,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:38:26,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (1/1) ... [2020-10-13 08:38:26,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (1/1) ... [2020-10-13 08:38:26,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (1/1) ... [2020-10-13 08:38:26,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (1/1) ... [2020-10-13 08:38:26,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (1/1) ... [2020-10-13 08:38:26,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (1/1) ... [2020-10-13 08:38:26,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (1/1) ... [2020-10-13 08:38:26,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:38:26,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:38:26,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:38:26,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:38:26,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (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 08:38:27,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:38:27,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:38:27,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:38:27,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:38:27,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:38:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:38:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:38:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:38:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:38:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:38:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:38:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:38:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:38:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:38:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:38:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:38:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:38:38,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:38:38,293 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:38:38,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:38:38 BoogieIcfgContainer [2020-10-13 08:38:38,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:38:38,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:38:38,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:38:38,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:38:38,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:38:23" (1/3) ... [2020-10-13 08:38:38,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7eab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:38:38, skipping insertion in model container [2020-10-13 08:38:38,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:38:26" (2/3) ... [2020-10-13 08:38:38,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7eab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:38:38, skipping insertion in model container [2020-10-13 08:38:38,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:38:38" (3/3) ... [2020-10-13 08:38:38,323 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label35.c [2020-10-13 08:38:38,337 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:38:38,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:38:38,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:38:38,389 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:38:38,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:38:38,390 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:38:38,390 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:38:38,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:38:38,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:38:38,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:38:38,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:38:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:38:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 08:38:38,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:38,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:38:38,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:38,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:38,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1424206575, now seen corresponding path program 1 times [2020-10-13 08:38:38,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:38,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554640261] [2020-10-13 08:38:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:38,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:38,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 08:38:38,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-13 08:38:38,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:38:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:38:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:38:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:38:39,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:39,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:39,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:39,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:39,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:38:39,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:38:39,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:39,033 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 08:38:39,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554640261] [2020-10-13 08:38:39,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:38:39,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:38:39,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132318536] [2020-10-13 08:38:39,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:38:39,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:39,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:38:39,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:38:39,057 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:38:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:55,462 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-13 08:38:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:55,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 08:38:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:55,501 INFO L225 Difference]: With dead ends: 3152 [2020-10-13 08:38:55,501 INFO L226 Difference]: Without dead ends: 1954 [2020-10-13 08:38:55,511 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 08:38:55,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-13 08:38:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-13 08:38:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-13 08:38:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-13 08:38:55,674 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 16 [2020-10-13 08:38:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:55,674 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-13 08:38:55,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:38:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-13 08:38:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 08:38:55,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:55,679 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:38:55,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:38:55,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash -811846266, now seen corresponding path program 1 times [2020-10-13 08:38:55,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:55,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004251220] [2020-10-13 08:38:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:38:56,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:38:56,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-13 08:38:56,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:38:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:38:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:56,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:56,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:56,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:38:56,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:56,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:56,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:38:56,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:38:56,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:38:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:38:56,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004251220] [2020-10-13 08:38:56,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:56,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:56,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664847898] [2020-10-13 08:38:56,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:56,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:56,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:56,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:56,998 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-13 08:39:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:15,730 INFO L93 Difference]: Finished difference Result 3879 states and 6754 transitions. [2020-10-13 08:39:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:39:15,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 08:39:15,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:15,747 INFO L225 Difference]: With dead ends: 3879 [2020-10-13 08:39:15,747 INFO L226 Difference]: Without dead ends: 2819 [2020-10-13 08:39:15,751 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 08:39:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-10-13 08:39:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2759. [2020-10-13 08:39:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-13 08:39:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4365 transitions. [2020-10-13 08:39:15,822 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4365 transitions. Word has length 86 [2020-10-13 08:39:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:15,822 INFO L479 AbstractCegarLoop]: Abstraction has 2759 states and 4365 transitions. [2020-10-13 08:39:15,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:39:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4365 transitions. [2020-10-13 08:39:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 08:39:15,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:15,826 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:39:15,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:39:15,827 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:15,827 INFO L82 PathProgramCache]: Analyzing trace with hash 492188075, now seen corresponding path program 1 times [2020-10-13 08:39:15,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:15,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508294147] [2020-10-13 08:39:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:16,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:16,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:39:16,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:39:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-13 08:39:16,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:39:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:39:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:39:16,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:16,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:16,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:16,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:39:16,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:39:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:16,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:16,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:39:16,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:39:16,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:39:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:39:16,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508294147] [2020-10-13 08:39:16,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:39:16,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:39:16,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964818567] [2020-10-13 08:39:16,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:39:16,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:16,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:39:16,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:39:16,983 INFO L87 Difference]: Start difference. First operand 2759 states and 4365 transitions. Second operand 6 states. [2020-10-13 08:39:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:34,269 INFO L93 Difference]: Finished difference Result 10482 states and 16898 transitions. [2020-10-13 08:39:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:39:34,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-13 08:39:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:34,315 INFO L225 Difference]: With dead ends: 10482 [2020-10-13 08:39:34,316 INFO L226 Difference]: Without dead ends: 7729 [2020-10-13 08:39:34,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:39:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2020-10-13 08:39:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 7706. [2020-10-13 08:39:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7706 states. [2020-10-13 08:39:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7706 states to 7706 states and 11394 transitions. [2020-10-13 08:39:34,550 INFO L78 Accepts]: Start accepts. Automaton has 7706 states and 11394 transitions. Word has length 91 [2020-10-13 08:39:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:34,551 INFO L479 AbstractCegarLoop]: Abstraction has 7706 states and 11394 transitions. [2020-10-13 08:39:34,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:39:34,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7706 states and 11394 transitions. [2020-10-13 08:39:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 08:39:34,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:34,567 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:39:34,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:39:34,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:34,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2044118735, now seen corresponding path program 1 times [2020-10-13 08:39:34,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:34,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134632506] [2020-10-13 08:39:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:34,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:37,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:39,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 08:39:39,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:39:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 08:39:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:39:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 08:39:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:39:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:39,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:39,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:39,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:39,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:39:39,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:39,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:39,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:39:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:39,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:39,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:39,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:39:39,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:39,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:39:39,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:39,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:39,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:39,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:39,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:39:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:39:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:39:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:39:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:39:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:39:39,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134632506] [2020-10-13 08:39:39,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:39:39,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:39:39,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394071109] [2020-10-13 08:39:39,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:39:39,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:39:39,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:39:39,984 INFO L87 Difference]: Start difference. First operand 7706 states and 11394 transitions. Second operand 5 states. [2020-10-13 08:39:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:55,735 INFO L93 Difference]: Finished difference Result 21914 states and 33121 transitions. [2020-10-13 08:39:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:39:55,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 08:39:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:55,872 INFO L225 Difference]: With dead ends: 21914 [2020-10-13 08:39:55,872 INFO L226 Difference]: Without dead ends: 14214 [2020-10-13 08:39:55,893 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 08:39:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14214 states. [2020-10-13 08:39:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14214 to 14209. [2020-10-13 08:39:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14209 states. [2020-10-13 08:39:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14209 states to 14209 states and 20465 transitions. [2020-10-13 08:39:56,223 INFO L78 Accepts]: Start accepts. Automaton has 14209 states and 20465 transitions. Word has length 167 [2020-10-13 08:39:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:56,225 INFO L479 AbstractCegarLoop]: Abstraction has 14209 states and 20465 transitions. [2020-10-13 08:39:56,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:39:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 14209 states and 20465 transitions. [2020-10-13 08:39:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 08:39:56,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:56,230 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 08:39:56,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:39:56,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:56,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:56,231 INFO L82 PathProgramCache]: Analyzing trace with hash -206370797, now seen corresponding path program 1 times [2020-10-13 08:39:56,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:56,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358266085] [2020-10-13 08:39:56,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:01,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:01,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 08:40:01,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:40:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4889 [2020-10-13 08:40:01,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:40:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:40:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:40:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:01,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:01,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:01,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:01,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:40:01,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:01,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:40:01,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:40:01,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:40:01,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:40:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:01,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:01,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:40:01,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:40:01,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:40:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:40:01,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358266085] [2020-10-13 08:40:01,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:01,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:40:01,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165590031] [2020-10-13 08:40:01,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:01,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:01,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:01,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:01,545 INFO L87 Difference]: Start difference. First operand 14209 states and 20465 transitions. Second operand 5 states. [2020-10-13 08:40:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:15,335 INFO L93 Difference]: Finished difference Result 41397 states and 61721 transitions. [2020-10-13 08:40:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:40:15,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-13 08:40:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:15,440 INFO L225 Difference]: With dead ends: 41397 [2020-10-13 08:40:15,441 INFO L226 Difference]: Without dead ends: 27194 [2020-10-13 08:40:15,487 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 08:40:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2020-10-13 08:40:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 27188. [2020-10-13 08:40:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27188 states. [2020-10-13 08:40:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27188 states to 27188 states and 37763 transitions. [2020-10-13 08:40:17,186 INFO L78 Accepts]: Start accepts. Automaton has 27188 states and 37763 transitions. Word has length 216 [2020-10-13 08:40:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:17,187 INFO L479 AbstractCegarLoop]: Abstraction has 27188 states and 37763 transitions. [2020-10-13 08:40:17,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 27188 states and 37763 transitions. [2020-10-13 08:40:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 08:40:17,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:17,194 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 08:40:17,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:40:17,195 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:17,195 INFO L82 PathProgramCache]: Analyzing trace with hash -519060453, now seen corresponding path program 1 times [2020-10-13 08:40:17,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:17,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266393304] [2020-10-13 08:40:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:21,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 08:40:21,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:40:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4464 [2020-10-13 08:40:21,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:40:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-13 08:40:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:40:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:21,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:21,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:40:21,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:21,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:21,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:21,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:40:21,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:21,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:40:21,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:40:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:21,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:40:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:40:21,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:21,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:40:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:40:22,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266393304] [2020-10-13 08:40:22,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:22,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:40:22,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561516187] [2020-10-13 08:40:22,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:22,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:22,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:22,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:22,072 INFO L87 Difference]: Start difference. First operand 27188 states and 37763 transitions. Second operand 5 states. [2020-10-13 08:40:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:48,043 INFO L93 Difference]: Finished difference Result 56954 states and 82855 transitions. [2020-10-13 08:40:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:40:48,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 08:40:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:48,197 INFO L225 Difference]: With dead ends: 56954 [2020-10-13 08:40:48,198 INFO L226 Difference]: Without dead ends: 37066 [2020-10-13 08:40:48,259 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 08:40:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37066 states. [2020-10-13 08:40:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37066 to 36996. [2020-10-13 08:40:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36996 states. [2020-10-13 08:40:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36996 states to 36996 states and 52725 transitions. [2020-10-13 08:40:49,204 INFO L78 Accepts]: Start accepts. Automaton has 36996 states and 52725 transitions. Word has length 219 [2020-10-13 08:40:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:49,205 INFO L479 AbstractCegarLoop]: Abstraction has 36996 states and 52725 transitions. [2020-10-13 08:40:49,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 36996 states and 52725 transitions. [2020-10-13 08:40:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-13 08:40:49,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:49,216 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:49,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:40:49,216 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:49,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1400374252, now seen corresponding path program 1 times [2020-10-13 08:40:49,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:49,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600737669] [2020-10-13 08:40:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:49,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 08:40:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:40:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3949 [2020-10-13 08:40:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:40:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 08:40:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:40:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:53,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:40:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:53,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:40:53,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:40:53,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:40:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:53,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 08:40:53,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-13 08:40:53,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 08:40:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:40:53,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600737669] [2020-10-13 08:40:53,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:53,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:40:53,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807669101] [2020-10-13 08:40:53,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:53,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:53,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:53,836 INFO L87 Difference]: Start difference. First operand 36996 states and 52725 transitions. Second operand 5 states. [2020-10-13 08:41:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:17,837 INFO L93 Difference]: Finished difference Result 76574 states and 113191 transitions. [2020-10-13 08:41:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:17,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-13 08:41:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:18,085 INFO L225 Difference]: With dead ends: 76574 [2020-10-13 08:41:18,086 INFO L226 Difference]: Without dead ends: 46877 [2020-10-13 08:41:18,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 08:41:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46877 states. [2020-10-13 08:41:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46877 to 46804. [2020-10-13 08:41:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46804 states. [2020-10-13 08:41:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46804 states to 46804 states and 69461 transitions. [2020-10-13 08:41:19,597 INFO L78 Accepts]: Start accepts. Automaton has 46804 states and 69461 transitions. Word has length 261 [2020-10-13 08:41:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:19,598 INFO L479 AbstractCegarLoop]: Abstraction has 46804 states and 69461 transitions. [2020-10-13 08:41:19,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 46804 states and 69461 transitions. [2020-10-13 08:41:19,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-13 08:41:19,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:19,625 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:41:19,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:41:19,626 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:19,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:19,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1657236484, now seen corresponding path program 1 times [2020-10-13 08:41:19,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:19,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911806434] [2020-10-13 08:41:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:24,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:24,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-13 08:41:24,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:41:24,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 08:41:24,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-13 08:41:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:41:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:24,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:24,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:41:24,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:24,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:24,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:41:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:41:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:41:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:26,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:41:26,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-10-13 08:41:26,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-13 08:41:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:26,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:26,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:41:26,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:41:26,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:26,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 08:41:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 08:41:26,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911806434] [2020-10-13 08:41:26,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:26,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:41:26,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818515285] [2020-10-13 08:41:26,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:41:26,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:26,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:41:26,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:41:26,590 INFO L87 Difference]: Start difference. First operand 46804 states and 69461 transitions. Second operand 5 states. [2020-10-13 08:41:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:49,510 INFO L93 Difference]: Finished difference Result 96192 states and 146972 transitions. [2020-10-13 08:41:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:49,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 344 [2020-10-13 08:41:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:49,950 INFO L225 Difference]: With dead ends: 96192 [2020-10-13 08:41:49,950 INFO L226 Difference]: Without dead ends: 56687 [2020-10-13 08:41:50,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 08:41:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56687 states. [2020-10-13 08:41:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56687 to 56622. [2020-10-13 08:41:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56622 states. [2020-10-13 08:41:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56622 states to 56622 states and 86707 transitions. [2020-10-13 08:41:51,255 INFO L78 Accepts]: Start accepts. Automaton has 56622 states and 86707 transitions. Word has length 344 [2020-10-13 08:41:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:51,256 INFO L479 AbstractCegarLoop]: Abstraction has 56622 states and 86707 transitions. [2020-10-13 08:41:51,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 56622 states and 86707 transitions. [2020-10-13 08:41:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-13 08:41:51,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:51,291 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:41:51,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:41:51,292 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:51,292 INFO L82 PathProgramCache]: Analyzing trace with hash -138139946, now seen corresponding path program 1 times [2020-10-13 08:41:51,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:51,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342962559] [2020-10-13 08:41:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:53,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 08:41:56,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:41:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4958 [2020-10-13 08:41:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:41:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:41:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:41:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:56,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:41:56,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:56,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:56,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:56,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:41:56,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:41:56,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:41:56,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:41:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:57,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:57,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 08:41:57,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:41:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-13 08:41:57,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:41:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-13 08:41:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:41:58,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342962559] [2020-10-13 08:41:58,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:58,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:41:58,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290432470] [2020-10-13 08:41:58,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:41:58,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:58,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:41:58,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:41:58,155 INFO L87 Difference]: Start difference. First operand 56622 states and 86707 transitions. Second operand 7 states.