/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem17_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:33:58,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:33:58,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:33:58,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:33:58,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:33:58,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:33:58,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:33:58,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:33:58,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:33:58,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:33:58,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:33:58,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:33:58,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:33:58,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:33:58,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:33:58,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:33:58,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:33:58,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:33:58,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:33:58,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:33:58,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:33:58,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:33:58,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:33:58,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:33:58,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:33:58,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:33:58,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:33:58,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:33:58,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:33:58,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:33:58,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:33:58,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:33:58,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:33:58,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:33:58,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:33:58,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:33:58,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:33:58,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:33:58,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:33:58,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:33:58,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:33:58,704 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 [2020-10-14 22:33:58,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:33:58,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:33:58,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:33:58,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:33:58,727 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:33:58,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:33:58,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:33:58,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:33:58,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:33:58,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:33:58,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:33:58,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:33:58,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:33:58,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:33:58,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:33:58,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:33:58,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:33:58,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:33:58,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:33:58,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:33:58,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:33:58,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:33:58,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:33:58,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:33:58,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:33:58,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:33:58,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:33:58,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:33:58,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:33:58,732 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:33:59,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:33:59,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:33:59,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:33:59,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:33:59,040 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:33:59,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40.c [2020-10-14 22:33:59,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7ae7d7e3/ee39e5e22a3d4751bba26283f49f8561/FLAGc3b923522 [2020-10-14 22:33:59,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:33:59,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label40.c [2020-10-14 22:33:59,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7ae7d7e3/ee39e5e22a3d4751bba26283f49f8561/FLAGc3b923522 [2020-10-14 22:33:59,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7ae7d7e3/ee39e5e22a3d4751bba26283f49f8561 [2020-10-14 22:33:59,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:33:59,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:33:59,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:33:59,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:33:59,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:33:59,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:33:59" (1/1) ... [2020-10-14 22:33:59,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:33:59, skipping insertion in model container [2020-10-14 22:33:59,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:33:59" (1/1) ... [2020-10-14 22:33:59,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:34:00,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:34:01,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:34:01,294 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:34:01,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:34:01,763 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:34:01,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01 WrapperNode [2020-10-14 22:34:01,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:34:01,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:34:01,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:34:01,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:34:01,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (1/1) ... [2020-10-14 22:34:01,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (1/1) ... [2020-10-14 22:34:01,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (1/1) ... [2020-10-14 22:34:01,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (1/1) ... [2020-10-14 22:34:01,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (1/1) ... [2020-10-14 22:34:01,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (1/1) ... [2020-10-14 22:34:01,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (1/1) ... [2020-10-14 22:34:02,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:34:02,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:34:02,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:34:02,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:34:02,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (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 [2020-10-14 22:34:02,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:34:02,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:34:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:34:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:34:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:34:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:34:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:34:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:34:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:34:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:34:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:34:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:34:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:34:10,881 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:34:10,882 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:34:10,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:34:10 BoogieIcfgContainer [2020-10-14 22:34:10,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:34:10,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:34:10,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:34:10,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:34:10,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:33:59" (1/3) ... [2020-10-14 22:34:10,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64958040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:34:10, skipping insertion in model container [2020-10-14 22:34:10,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:34:01" (2/3) ... [2020-10-14 22:34:10,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64958040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:34:10, skipping insertion in model container [2020-10-14 22:34:10,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:34:10" (3/3) ... [2020-10-14 22:34:10,900 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label40.c [2020-10-14 22:34:10,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:34:10,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:34:10,939 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:34:10,967 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:34:10,967 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:34:10,968 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:34:10,968 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:34:10,968 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:34:10,968 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:34:10,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:34:10,968 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:34:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:34:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 22:34:11,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:11,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:11,009 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:11,016 INFO L82 PathProgramCache]: Analyzing trace with hash -928574159, now seen corresponding path program 1 times [2020-10-14 22:34:11,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:11,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799650248] [2020-10-14 22:34:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:11,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 22:34:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-14 22:34:11,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:11,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:34:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 22:34:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:34:11,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:11,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:11,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:11,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:11,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:34:11,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:11,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:34:11,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799650248] [2020-10-14 22:34:11,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:34:11,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:34:11,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114853745] [2020-10-14 22:34:11,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:34:11,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:11,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:34:11,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:34:11,794 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:34:21,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:21,766 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:34:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:34:21,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-14 22:34:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:21,794 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:34:21,794 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:34:21,806 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 [2020-10-14 22:34:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:34:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:34:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:34:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:34:21,925 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 28 [2020-10-14 22:34:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:21,925 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:34:21,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:34:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:34:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 22:34:21,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:21,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:21,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:34:21,932 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1682157028, now seen corresponding path program 1 times [2020-10-14 22:34:21,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:21,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560833782] [2020-10-14 22:34:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:23,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 22:34:23,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:34:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-14 22:34:23,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:34:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:34:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:34:23,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:23,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:23,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:34:23,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:23,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:23,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:34:23,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:34:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 22:34:23,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:23,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:34:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:34:23,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560833782] [2020-10-14 22:34:23,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:23,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:34:23,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220857832] [2020-10-14 22:34:23,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:34:23,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:23,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:34:23,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:34:23,651 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-14 22:34:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:37,561 INFO L93 Difference]: Finished difference Result 2942 states and 4559 transitions. [2020-10-14 22:34:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:34:37,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-14 22:34:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:37,574 INFO L225 Difference]: With dead ends: 2942 [2020-10-14 22:34:37,575 INFO L226 Difference]: Without dead ends: 1946 [2020-10-14 22:34:37,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:34:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2020-10-14 22:34:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1929. [2020-10-14 22:34:37,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2020-10-14 22:34:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2599 transitions. [2020-10-14 22:34:37,649 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2599 transitions. Word has length 99 [2020-10-14 22:34:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:37,649 INFO L479 AbstractCegarLoop]: Abstraction has 1929 states and 2599 transitions. [2020-10-14 22:34:37,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:34:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2599 transitions. [2020-10-14 22:34:37,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 22:34:37,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:37,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:37,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:34:37,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:37,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1028514536, now seen corresponding path program 1 times [2020-10-14 22:34:37,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:37,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581362211] [2020-10-14 22:34:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:37,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:38,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:38,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:34:38,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 22:34:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:38,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:34:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 22:34:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:38,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:38,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:38,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:38,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:38,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:34:38,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:38,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:38,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:38,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:34:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:34:38,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:38,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:34:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:34:38,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581362211] [2020-10-14 22:34:38,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:38,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:34:38,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966612697] [2020-10-14 22:34:38,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:34:38,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:38,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:34:38,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:34:38,362 INFO L87 Difference]: Start difference. First operand 1929 states and 2599 transitions. Second operand 5 states. [2020-10-14 22:34:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:47,291 INFO L93 Difference]: Finished difference Result 4758 states and 6609 transitions. [2020-10-14 22:34:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:34:47,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 22:34:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:47,308 INFO L225 Difference]: With dead ends: 4758 [2020-10-14 22:34:47,308 INFO L226 Difference]: Without dead ends: 2835 [2020-10-14 22:34:47,314 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 [2020-10-14 22:34:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2020-10-14 22:34:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2829. [2020-10-14 22:34:47,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2829 states. [2020-10-14 22:34:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 3712 transitions. [2020-10-14 22:34:47,464 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 3712 transitions. Word has length 102 [2020-10-14 22:34:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:47,465 INFO L479 AbstractCegarLoop]: Abstraction has 2829 states and 3712 transitions. [2020-10-14 22:34:47,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:34:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 3712 transitions. [2020-10-14 22:34:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 22:34:47,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:47,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:34:47,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:34:47,487 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:47,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1705337025, now seen corresponding path program 1 times [2020-10-14 22:34:47,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:47,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563930353] [2020-10-14 22:34:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:52,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 22:34:52,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:34:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 22:34:52,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:52,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:34:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 22:34:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:52,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:34:52,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:52,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:52,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:34:52,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:34:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 22:34:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:52,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:34:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 22:34:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:53,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:53,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:34:53,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 22:34:53,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:53,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:34:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:34:53,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563930353] [2020-10-14 22:34:53,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:53,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:34:53,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955576849] [2020-10-14 22:34:53,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:34:53,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:53,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:34:53,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:34:53,286 INFO L87 Difference]: Start difference. First operand 2829 states and 3712 transitions. Second operand 7 states. [2020-10-14 22:35:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:05,032 INFO L93 Difference]: Finished difference Result 8419 states and 11219 transitions. [2020-10-14 22:35:05,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:35:05,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-14 22:35:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:05,059 INFO L225 Difference]: With dead ends: 8419 [2020-10-14 22:35:05,059 INFO L226 Difference]: Without dead ends: 4695 [2020-10-14 22:35:05,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:35:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2020-10-14 22:35:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 3777. [2020-10-14 22:35:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3777 states. [2020-10-14 22:35:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 4546 transitions. [2020-10-14 22:35:05,173 INFO L78 Accepts]: Start accepts. Automaton has 3777 states and 4546 transitions. Word has length 175 [2020-10-14 22:35:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:05,173 INFO L479 AbstractCegarLoop]: Abstraction has 3777 states and 4546 transitions. [2020-10-14 22:35:05,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:35:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3777 states and 4546 transitions. [2020-10-14 22:35:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 22:35:05,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:05,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:35:05,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:35:05,177 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:05,177 INFO L82 PathProgramCache]: Analyzing trace with hash -507828307, now seen corresponding path program 1 times [2020-10-14 22:35:05,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:05,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959490243] [2020-10-14 22:35:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:06,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:06,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:35:06,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:35:06,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-14 22:35:06,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:06,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:35:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:35:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:06,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:06,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:06,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:06,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:35:06,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:06,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:35:06,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:06,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:06,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 22:35:06,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:06,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:35:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:06,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:35:06,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:06,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:35:06,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:06,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:35:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:35:06,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959490243] [2020-10-14 22:35:06,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:06,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:35:06,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143991081] [2020-10-14 22:35:06,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:35:06,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:06,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:35:06,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:35:06,933 INFO L87 Difference]: Start difference. First operand 3777 states and 4546 transitions. Second operand 7 states. [2020-10-14 22:35:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:15,448 INFO L93 Difference]: Finished difference Result 9792 states and 12153 transitions. [2020-10-14 22:35:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:35:15,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-14 22:35:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:15,478 INFO L225 Difference]: With dead ends: 9792 [2020-10-14 22:35:15,478 INFO L226 Difference]: Without dead ends: 6021 [2020-10-14 22:35:15,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:35:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6021 states. [2020-10-14 22:35:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6021 to 6013. [2020-10-14 22:35:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6013 states. [2020-10-14 22:35:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 7255 transitions. [2020-10-14 22:35:15,624 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 7255 transitions. Word has length 188 [2020-10-14 22:35:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:15,627 INFO L479 AbstractCegarLoop]: Abstraction has 6013 states and 7255 transitions. [2020-10-14 22:35:15,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:35:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 7255 transitions. [2020-10-14 22:35:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 22:35:15,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:15,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:35:15,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:35:15,631 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:15,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:15,631 INFO L82 PathProgramCache]: Analyzing trace with hash 205409513, now seen corresponding path program 1 times [2020-10-14 22:35:15,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:15,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047048641] [2020-10-14 22:35:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:16,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:19,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:19,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 22:35:19,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:35:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3823 [2020-10-14 22:35:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:19,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:35:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:35:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:35:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:19,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:19,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:19,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:35:19,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:19,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:35:19,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:19,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:19,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:35:19,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:19,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:35:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:35:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:19,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:19,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:19,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:35:19,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:19,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 22:35:19,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:19,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:35:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:35:20,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047048641] [2020-10-14 22:35:20,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:20,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:35:20,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441731836] [2020-10-14 22:35:20,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:35:20,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:20,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:35:20,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:35:20,121 INFO L87 Difference]: Start difference. First operand 6013 states and 7255 transitions. Second operand 9 states. [2020-10-14 22:35:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:39,711 INFO L93 Difference]: Finished difference Result 18519 states and 23572 transitions. [2020-10-14 22:35:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 22:35:39,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-10-14 22:35:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:39,762 INFO L225 Difference]: With dead ends: 18519 [2020-10-14 22:35:39,763 INFO L226 Difference]: Without dead ends: 12044 [2020-10-14 22:35:39,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-14 22:35:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12044 states. [2020-10-14 22:35:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12044 to 11966. [2020-10-14 22:35:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11966 states. [2020-10-14 22:35:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11966 states to 11966 states and 14629 transitions. [2020-10-14 22:35:40,084 INFO L78 Accepts]: Start accepts. Automaton has 11966 states and 14629 transitions. Word has length 190 [2020-10-14 22:35:40,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:40,085 INFO L479 AbstractCegarLoop]: Abstraction has 11966 states and 14629 transitions. [2020-10-14 22:35:40,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:35:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand 11966 states and 14629 transitions. [2020-10-14 22:35:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 22:35:40,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:40,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:35:40,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:35:40,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:40,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:40,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1158770092, now seen corresponding path program 1 times [2020-10-14 22:35:40,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:40,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826969945] [2020-10-14 22:35:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:40,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:44,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 22:35:44,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:35:44,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4099 [2020-10-14 22:35:44,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:44,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:35:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:35:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:35:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:44,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:35:44,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:44,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:44,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:44,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:44,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:44,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:44,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:44,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 22:35:44,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:44,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:35:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:44,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:44,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:35:44,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:35:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 22:35:44,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:44,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:35:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:35:44,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826969945] [2020-10-14 22:35:44,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:44,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:35:44,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024793860] [2020-10-14 22:35:44,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:35:44,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:44,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:35:44,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:35:44,671 INFO L87 Difference]: Start difference. First operand 11966 states and 14629 transitions. Second operand 5 states. [2020-10-14 22:35:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:57,922 INFO L93 Difference]: Finished difference Result 23948 states and 29296 transitions. [2020-10-14 22:35:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:35:57,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-14 22:35:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:57,960 INFO L225 Difference]: With dead ends: 23948 [2020-10-14 22:35:57,960 INFO L226 Difference]: Without dead ends: 11988 [2020-10-14 22:35:57,988 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 [2020-10-14 22:35:58,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2020-10-14 22:35:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 11966. [2020-10-14 22:35:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11966 states. [2020-10-14 22:35:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11966 states to 11966 states and 14573 transitions. [2020-10-14 22:35:58,222 INFO L78 Accepts]: Start accepts. Automaton has 11966 states and 14573 transitions. Word has length 201 [2020-10-14 22:35:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:58,223 INFO L479 AbstractCegarLoop]: Abstraction has 11966 states and 14573 transitions. [2020-10-14 22:35:58,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:35:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 11966 states and 14573 transitions. [2020-10-14 22:35:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 22:35:58,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:58,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:35:58,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:35:58,229 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash -568528999, now seen corresponding path program 1 times [2020-10-14 22:35:58,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:58,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285070745] [2020-10-14 22:35:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:00,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 22:36:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:36:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1905 [2020-10-14 22:36:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:00,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:36:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 22:36:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:00,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:00,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:36:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:00,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 22:36:00,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:00,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:36:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:00,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:00,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:36:00,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 22:36:00,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:00,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:36:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:36:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:00,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:00,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:00,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:00,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:36:00,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 9 proven. 58 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-14 22:36:01,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285070745] [2020-10-14 22:36:01,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:01,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:01,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148540416] [2020-10-14 22:36:01,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:36:01,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:01,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:36:01,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:36:01,079 INFO L87 Difference]: Start difference. First operand 11966 states and 14573 transitions. Second operand 8 states. [2020-10-14 22:36:26,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:26,177 INFO L93 Difference]: Finished difference Result 39064 states and 48945 transitions. [2020-10-14 22:36:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:36:26,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2020-10-14 22:36:26,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:26,264 INFO L225 Difference]: With dead ends: 39064 [2020-10-14 22:36:26,264 INFO L226 Difference]: Without dead ends: 26210 [2020-10-14 22:36:26,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:36:26,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26210 states. [2020-10-14 22:36:26,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26210 to 20860. [2020-10-14 22:36:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20860 states. [2020-10-14 22:36:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20860 states to 20860 states and 25303 transitions. [2020-10-14 22:36:26,813 INFO L78 Accepts]: Start accepts. Automaton has 20860 states and 25303 transitions. Word has length 272 [2020-10-14 22:36:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:26,814 INFO L479 AbstractCegarLoop]: Abstraction has 20860 states and 25303 transitions. [2020-10-14 22:36:26,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:36:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 20860 states and 25303 transitions. [2020-10-14 22:36:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 22:36:26,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:26,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:26,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:36:26,826 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1404153519, now seen corresponding path program 1 times [2020-10-14 22:36:26,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:26,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820880177] [2020-10-14 22:36:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:30,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:30,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-14 22:36:30,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:36:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3701 [2020-10-14 22:36:30,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:30,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:36:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:36:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:30,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:30,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:30,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:36:30,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:30,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:30,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:30,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:30,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 22:36:30,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:30,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:36:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:36:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:30,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:36:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 22:36:31,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:31,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:31,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:36:31,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:36:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:31,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:36:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:36:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:31,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:36:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 151 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:36:31,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820880177] [2020-10-14 22:36:31,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:31,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:36:31,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156846251] [2020-10-14 22:36:31,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:36:31,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:31,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:36:31,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:36:31,496 INFO L87 Difference]: Start difference. First operand 20860 states and 25303 transitions. Second operand 7 states. [2020-10-14 22:36:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:36:41,096 INFO L93 Difference]: Finished difference Result 45458 states and 55210 transitions. [2020-10-14 22:36:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:36:41,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-14 22:36:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:36:41,172 INFO L225 Difference]: With dead ends: 45458 [2020-10-14 22:36:41,173 INFO L226 Difference]: Without dead ends: 24604 [2020-10-14 22:36:41,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:36:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24604 states. [2020-10-14 22:36:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24604 to 24510. [2020-10-14 22:36:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24510 states. [2020-10-14 22:36:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24510 states to 24510 states and 29692 transitions. [2020-10-14 22:36:41,622 INFO L78 Accepts]: Start accepts. Automaton has 24510 states and 29692 transitions. Word has length 295 [2020-10-14 22:36:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:36:41,623 INFO L479 AbstractCegarLoop]: Abstraction has 24510 states and 29692 transitions. [2020-10-14 22:36:41,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:36:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 24510 states and 29692 transitions. [2020-10-14 22:36:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 22:36:41,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:36:41,635 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:36:41,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:36:41,636 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:36:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:36:41,636 INFO L82 PathProgramCache]: Analyzing trace with hash -910530481, now seen corresponding path program 1 times [2020-10-14 22:36:41,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:36:41,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62595730] [2020-10-14 22:36:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:36:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:41,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:46,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:46,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:46,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-14 22:36:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:36:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 22:36:46,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:46,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:36:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:36:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:36:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:36:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:46,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:46,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:36:46,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:36:46,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:46,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:36:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:36:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:36:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:36:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:36:47,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:36:47,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:47,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:36:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:36:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:36:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:47,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:47,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:36:47,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:36:47,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:47,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:36:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:36:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:36:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:47,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:36:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:36:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:36:47,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:36:47,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:36:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:36:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 71 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:36:47,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62595730] [2020-10-14 22:36:47,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:36:47,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:36:47,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741549122] [2020-10-14 22:36:47,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:36:47,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:36:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:36:47,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:36:47,678 INFO L87 Difference]: Start difference. First operand 24510 states and 29692 transitions. Second operand 10 states. [2020-10-14 22:37:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:13,828 INFO L93 Difference]: Finished difference Result 69064 states and 85681 transitions. [2020-10-14 22:37:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 22:37:13,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 319 [2020-10-14 22:37:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:13,958 INFO L225 Difference]: With dead ends: 69064 [2020-10-14 22:37:13,958 INFO L226 Difference]: Without dead ends: 44560 [2020-10-14 22:37:14,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-10-14 22:37:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44560 states. [2020-10-14 22:37:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44560 to 44021. [2020-10-14 22:37:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44021 states. [2020-10-14 22:37:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44021 states to 44021 states and 53866 transitions. [2020-10-14 22:37:14,686 INFO L78 Accepts]: Start accepts. Automaton has 44021 states and 53866 transitions. Word has length 319 [2020-10-14 22:37:14,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:14,687 INFO L479 AbstractCegarLoop]: Abstraction has 44021 states and 53866 transitions. [2020-10-14 22:37:14,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:37:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 44021 states and 53866 transitions. [2020-10-14 22:37:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-14 22:37:14,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:14,696 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:37:14,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:37:14,696 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:14,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:14,697 INFO L82 PathProgramCache]: Analyzing trace with hash -597425529, now seen corresponding path program 1 times [2020-10-14 22:37:14,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:14,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751587466] [2020-10-14 22:37:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:19,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:19,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-14 22:37:19,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:37:19,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 22:37:19,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:19,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:19,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:37:19,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:37:19,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:37:19,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:19,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:37:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:19,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:37:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:37:19,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:19,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:37:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:37:19,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:37:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:20,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:37:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:37:20,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:37:20,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:37:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:37:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:37:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:20,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:37:20,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:37:20,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:37:20,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:37:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:37:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:20,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:20,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:37:20,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 22:37:20,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:20,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:37:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:37:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:37:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:37:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:21,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:37:21,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:37:21,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:37:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:37:21,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:37:21,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:37:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:37:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:37:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:37:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:37:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 94 proven. 448 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:37:21,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751587466] [2020-10-14 22:37:21,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:37:21,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:37:21,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592577837] [2020-10-14 22:37:21,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:37:21,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:37:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:37:21,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:37:21,359 INFO L87 Difference]: Start difference. First operand 44021 states and 53866 transitions. Second operand 11 states. [2020-10-14 22:37:29,471 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-10-14 22:37:35,654 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-14 22:37:41,317 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-14 22:37:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:37:46,745 INFO L93 Difference]: Finished difference Result 91415 states and 112711 transitions. [2020-10-14 22:37:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 22:37:46,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 381 [2020-10-14 22:37:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:37:46,919 INFO L225 Difference]: With dead ends: 91415 [2020-10-14 22:37:46,920 INFO L226 Difference]: Without dead ends: 47400 [2020-10-14 22:37:47,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 22:37:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47400 states. [2020-10-14 22:37:48,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47400 to 47143. [2020-10-14 22:37:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47143 states. [2020-10-14 22:37:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47143 states to 47143 states and 57290 transitions. [2020-10-14 22:37:48,195 INFO L78 Accepts]: Start accepts. Automaton has 47143 states and 57290 transitions. Word has length 381 [2020-10-14 22:37:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:37:48,195 INFO L479 AbstractCegarLoop]: Abstraction has 47143 states and 57290 transitions. [2020-10-14 22:37:48,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 22:37:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 47143 states and 57290 transitions. [2020-10-14 22:37:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-14 22:37:48,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:37:48,205 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:37:48,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:37:48,206 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:37:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:37:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash -909503013, now seen corresponding path program 1 times [2020-10-14 22:37:48,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:37:48,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855941133] [2020-10-14 22:37:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:37:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:37:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:37:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking...