/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem04_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:00:17,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:00:17,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:00:17,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:00:17,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:00:17,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:00:17,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:00:17,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:00:17,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:00:17,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:00:17,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:00:17,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:00:17,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:00:17,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:00:17,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:00:17,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:00:17,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:00:17,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:00:17,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:00:17,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:00:17,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:00:17,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:00:17,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:00:17,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:00:17,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:00:17,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:00:17,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:00:17,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:00:17,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:00:17,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:00:17,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:00:17,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:00:17,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:00:17,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:00:17,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:00:17,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:00:17,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:00:17,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:00:17,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:00:17,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:00:17,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:00:17,712 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 01:00:17,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:00:17,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:00:17,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:00:17,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:00:17,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:00:17,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:00:17,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:00:17,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:00:17,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:00:17,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:00:17,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:00:17,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:00:17,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:00:17,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:00:17,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:00:17,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:00:17,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:00:17,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:00:17,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:00:17,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:00:17,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:00:17,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:00:17,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:00:17,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:00:17,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:00:17,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:00:17,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:00:17,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:00:17,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:00:17,765 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:00:18,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:00:18,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:00:18,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:00:18,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:00:18,106 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:00:18,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label12.c [2020-10-14 01:00:18,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57dae1742/b3778121b0da4c23a35941ba9fabf770/FLAG3c146fe63 [2020-10-14 01:00:18,914 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:00:18,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label12.c [2020-10-14 01:00:18,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57dae1742/b3778121b0da4c23a35941ba9fabf770/FLAG3c146fe63 [2020-10-14 01:00:19,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57dae1742/b3778121b0da4c23a35941ba9fabf770 [2020-10-14 01:00:19,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:00:19,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:00:19,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:00:19,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:00:19,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:00:19,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:00:19" (1/1) ... [2020-10-14 01:00:19,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:19, skipping insertion in model container [2020-10-14 01:00:19,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:00:19" (1/1) ... [2020-10-14 01:00:19,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:00:19,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:00:21,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:00:21,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:00:21,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:00:22,046 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:00:22,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22 WrapperNode [2020-10-14 01:00:22,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:00:22,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:00:22,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:00:22,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:00:22,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (1/1) ... [2020-10-14 01:00:22,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (1/1) ... [2020-10-14 01:00:22,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (1/1) ... [2020-10-14 01:00:22,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (1/1) ... [2020-10-14 01:00:22,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (1/1) ... [2020-10-14 01:00:22,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (1/1) ... [2020-10-14 01:00:22,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (1/1) ... [2020-10-14 01:00:22,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:00:22,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:00:22,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:00:22,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:00:22,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (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 01:00:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:00:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:00:22,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:00:22,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:00:22,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:00:22,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:00:22,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:00:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:00:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:00:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:00:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:00:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:00:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:00:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:00:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:00:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:00:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:00:26,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:00:26,906 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:00:26,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:00:26 BoogieIcfgContainer [2020-10-14 01:00:26,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:00:26,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:00:26,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:00:26,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:00:26,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:00:19" (1/3) ... [2020-10-14 01:00:26,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ec20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:00:26, skipping insertion in model container [2020-10-14 01:00:26,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:00:22" (2/3) ... [2020-10-14 01:00:26,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ec20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:00:26, skipping insertion in model container [2020-10-14 01:00:26,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:00:26" (3/3) ... [2020-10-14 01:00:26,942 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label12.c [2020-10-14 01:00:26,953 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:00:26,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:00:26,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:00:27,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:00:27,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:00:27,007 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:00:27,007 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:00:27,007 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:00:27,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:00:27,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:00:27,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:00:27,043 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:00:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2020-10-14 01:00:27,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:27,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:27,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:27,093 INFO L82 PathProgramCache]: Analyzing trace with hash -930448525, now seen corresponding path program 1 times [2020-10-14 01:00:27,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:27,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501808005] [2020-10-14 01:00:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:31,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:32,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:32,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 782 [2020-10-14 01:00:32,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:00:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 01:00:32,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:32,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:00:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:00:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 776 [2020-10-14 01:00:32,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:00:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:33,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:33,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:33,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:00:33,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:33,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:00:33,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:34,847 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 01:00:34,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501808005] [2020-10-14 01:00:34,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:00:34,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:00:34,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467608104] [2020-10-14 01:00:34,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:00:34,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:00:34,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:00:34,890 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 01:00:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:43,160 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 01:00:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:00:43,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 768 [2020-10-14 01:00:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:43,207 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:00:43,207 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:00:43,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:00:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:00:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 01:00:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 01:00:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2729 transitions. [2020-10-14 01:00:43,409 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2729 transitions. Word has length 768 [2020-10-14 01:00:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:43,412 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2729 transitions. [2020-10-14 01:00:43,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:00:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2729 transitions. [2020-10-14 01:00:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-14 01:00:43,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:43,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:43,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:00:43,442 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1628360130, now seen corresponding path program 1 times [2020-10-14 01:00:43,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:43,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050294365] [2020-10-14 01:00:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:43,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:48,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:48,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 792 [2020-10-14 01:00:48,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:00:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-14 01:00:48,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:48,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:00:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:00:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:00:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:49,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:49,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:49,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:00:49,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:49,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:00:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:49,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:49,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:00:49,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:00:49,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:49,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:49,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:49,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:00:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:00:49,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050294365] [2020-10-14 01:00:49,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:00:49,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:00:49,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770652277] [2020-10-14 01:00:49,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:00:49,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:49,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:00:49,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:00:49,574 INFO L87 Difference]: Start difference. First operand 1689 states and 2729 transitions. Second operand 8 states. [2020-10-14 01:01:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:02,027 INFO L93 Difference]: Finished difference Result 5195 states and 8442 transitions. [2020-10-14 01:01:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 01:01:02,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 776 [2020-10-14 01:01:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:02,048 INFO L225 Difference]: With dead ends: 5195 [2020-10-14 01:01:02,048 INFO L226 Difference]: Without dead ends: 3512 [2020-10-14 01:01:02,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 01:01:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2020-10-14 01:01:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3440. [2020-10-14 01:01:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3440 states. [2020-10-14 01:01:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 5086 transitions. [2020-10-14 01:01:02,188 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 5086 transitions. Word has length 776 [2020-10-14 01:01:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:02,189 INFO L479 AbstractCegarLoop]: Abstraction has 3440 states and 5086 transitions. [2020-10-14 01:01:02,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:01:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 5086 transitions. [2020-10-14 01:01:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2020-10-14 01:01:02,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:02,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:02,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:01:02,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:02,222 INFO L82 PathProgramCache]: Analyzing trace with hash 109340308, now seen corresponding path program 1 times [2020-10-14 01:01:02,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:02,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494692958] [2020-10-14 01:01:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:07,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:07,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-14 01:01:07,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:01:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 01:01:07,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:07,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:01:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:01:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:01:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:07,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:07,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:07,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:01:07,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:07,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:01:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:07,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:07,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:07,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:01:07,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:01:07,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:07,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:01:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:01:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:01:07,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494692958] [2020-10-14 01:01:07,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:01:07,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:01:07,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18745834] [2020-10-14 01:01:07,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:07,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:07,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:07,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:07,913 INFO L87 Difference]: Start difference. First operand 3440 states and 5086 transitions. Second operand 7 states. [2020-10-14 01:01:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:17,961 INFO L93 Difference]: Finished difference Result 10402 states and 15595 transitions. [2020-10-14 01:01:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:01:17,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 779 [2020-10-14 01:01:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:18,006 INFO L225 Difference]: With dead ends: 10402 [2020-10-14 01:01:18,006 INFO L226 Difference]: Without dead ends: 6968 [2020-10-14 01:01:18,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:01:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6968 states. [2020-10-14 01:01:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6968 to 6942. [2020-10-14 01:01:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6942 states. [2020-10-14 01:01:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 9929 transitions. [2020-10-14 01:01:18,290 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 9929 transitions. Word has length 779 [2020-10-14 01:01:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:18,292 INFO L479 AbstractCegarLoop]: Abstraction has 6942 states and 9929 transitions. [2020-10-14 01:01:18,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 9929 transitions. [2020-10-14 01:01:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-14 01:01:18,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:18,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:18,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:01:18,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:18,329 INFO L82 PathProgramCache]: Analyzing trace with hash -45453145, now seen corresponding path program 1 times [2020-10-14 01:01:18,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:18,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387679568] [2020-10-14 01:01:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:23,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:23,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-14 01:01:23,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:01:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 01:01:23,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:23,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:23,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 01:01:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:01:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:01:23,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:23,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:01:23,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:23,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:23,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:23,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:23,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:01:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:01:23,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:23,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 01:01:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 01:01:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:23,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:23,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:01:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:01:23,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:23,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:01:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:01:23,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387679568] [2020-10-14 01:01:23,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:23,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:23,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208438104] [2020-10-14 01:01:24,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:24,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:24,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:24,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:24,001 INFO L87 Difference]: Start difference. First operand 6942 states and 9929 transitions. Second operand 7 states. [2020-10-14 01:01:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:33,616 INFO L93 Difference]: Finished difference Result 17527 states and 24804 transitions. [2020-10-14 01:01:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:01:33,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 785 [2020-10-14 01:01:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:33,668 INFO L225 Difference]: With dead ends: 17527 [2020-10-14 01:01:33,668 INFO L226 Difference]: Without dead ends: 10591 [2020-10-14 01:01:33,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:01:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10591 states. [2020-10-14 01:01:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10591 to 10527. [2020-10-14 01:01:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10527 states. [2020-10-14 01:01:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 14156 transitions. [2020-10-14 01:01:33,995 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 14156 transitions. Word has length 785 [2020-10-14 01:01:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:33,996 INFO L479 AbstractCegarLoop]: Abstraction has 10527 states and 14156 transitions. [2020-10-14 01:01:33,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 14156 transitions. [2020-10-14 01:01:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-14 01:01:34,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:34,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:34,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:01:34,028 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:34,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:34,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1131323464, now seen corresponding path program 1 times [2020-10-14 01:01:34,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:34,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575766581] [2020-10-14 01:01:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:39,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 801 [2020-10-14 01:01:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:01:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 01:01:39,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:39,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:01:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:01:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:01:39,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:01:39,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:39,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:39,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:39,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:01:39,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:39,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:01:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:01:39,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:39,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:39,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:01:39,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:39,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:01:39,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:39,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:01:39,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:01:39,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575766581] [2020-10-14 01:01:39,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:01:39,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:01:39,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193886963] [2020-10-14 01:01:39,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:39,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:39,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:39,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:39,789 INFO L87 Difference]: Start difference. First operand 10527 states and 14156 transitions. Second operand 7 states. [2020-10-14 01:01:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:51,639 INFO L93 Difference]: Finished difference Result 31078 states and 43882 transitions. [2020-10-14 01:01:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:01:51,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 785 [2020-10-14 01:01:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:51,742 INFO L225 Difference]: With dead ends: 31078 [2020-10-14 01:01:51,743 INFO L226 Difference]: Without dead ends: 20557 [2020-10-14 01:01:51,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:01:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20557 states. [2020-10-14 01:01:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20557 to 20337. [2020-10-14 01:01:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20337 states. [2020-10-14 01:01:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20337 states to 20337 states and 27496 transitions. [2020-10-14 01:01:52,286 INFO L78 Accepts]: Start accepts. Automaton has 20337 states and 27496 transitions. Word has length 785 [2020-10-14 01:01:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:52,287 INFO L479 AbstractCegarLoop]: Abstraction has 20337 states and 27496 transitions. [2020-10-14 01:01:52,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 20337 states and 27496 transitions. [2020-10-14 01:01:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-14 01:01:52,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:52,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:52,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:01:52,345 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:52,346 INFO L82 PathProgramCache]: Analyzing trace with hash 756280407, now seen corresponding path program 1 times [2020-10-14 01:01:52,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:52,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522539343] [2020-10-14 01:01:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-14 01:01:55,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-14 01:01:55,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:01:55,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:01:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 773 [2020-10-14 01:01:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:01:55,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:55,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:55,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:01:55,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:01:55,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:01:55,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:55,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:55,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:01:55,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:01:56,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522539343] [2020-10-14 01:01:56,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:56,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 01:01:56,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412184059] [2020-10-14 01:01:56,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 01:01:56,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:56,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 01:01:56,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:01:56,376 INFO L87 Difference]: Start difference. First operand 20337 states and 27496 transitions. Second operand 6 states. [2020-10-14 01:02:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:10,511 INFO L93 Difference]: Finished difference Result 61882 states and 88634 transitions. [2020-10-14 01:02:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:02:10,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 804 [2020-10-14 01:02:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:10,652 INFO L225 Difference]: With dead ends: 61882 [2020-10-14 01:02:10,652 INFO L226 Difference]: Without dead ends: 41551 [2020-10-14 01:02:10,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:02:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41551 states. [2020-10-14 01:02:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41551 to 41528. [2020-10-14 01:02:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41528 states. [2020-10-14 01:02:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41528 states to 41528 states and 56063 transitions. [2020-10-14 01:02:11,636 INFO L78 Accepts]: Start accepts. Automaton has 41528 states and 56063 transitions. Word has length 804 [2020-10-14 01:02:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:11,639 INFO L479 AbstractCegarLoop]: Abstraction has 41528 states and 56063 transitions. [2020-10-14 01:02:11,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 01:02:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 41528 states and 56063 transitions. [2020-10-14 01:02:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-10-14 01:02:11,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:11,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:11,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:02:11,747 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:11,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1237120894, now seen corresponding path program 1 times [2020-10-14 01:02:11,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:11,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320488137] [2020-10-14 01:02:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:16,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 882 [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:02:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 01:02:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:17,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:17,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:17,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:17,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:02:17,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:17,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:02:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:17,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:17,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:02:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:02:17,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:17,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:02:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:17,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:17,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:02:17,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:02:17,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:17,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:02:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:02:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:17,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:17,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 01:02:17,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:17,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 01:02:17,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:17,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:02:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 01:02:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:02:17,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320488137] [2020-10-14 01:02:17,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:02:17,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:02:17,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472304975] [2020-10-14 01:02:17,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:02:17,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:17,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:02:17,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:02:17,627 INFO L87 Difference]: Start difference. First operand 41528 states and 56063 transitions. Second operand 8 states. [2020-10-14 01:02:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:32,573 INFO L93 Difference]: Finished difference Result 93431 states and 132266 transitions. [2020-10-14 01:02:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 01:02:32,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 862 [2020-10-14 01:02:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:32,760 INFO L225 Difference]: With dead ends: 93431 [2020-10-14 01:02:32,760 INFO L226 Difference]: Without dead ends: 52743 [2020-10-14 01:02:32,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:02:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52743 states. [2020-10-14 01:02:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52743 to 52627. [2020-10-14 01:02:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52627 states. [2020-10-14 01:02:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52627 states to 52627 states and 68583 transitions. [2020-10-14 01:02:33,817 INFO L78 Accepts]: Start accepts. Automaton has 52627 states and 68583 transitions. Word has length 862 [2020-10-14 01:02:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:33,818 INFO L479 AbstractCegarLoop]: Abstraction has 52627 states and 68583 transitions. [2020-10-14 01:02:33,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:02:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand 52627 states and 68583 transitions. [2020-10-14 01:02:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-14 01:02:33,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:33,885 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:02:33,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:02:33,886 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:33,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1025505822, now seen corresponding path program 1 times [2020-10-14 01:02:33,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:33,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230647496] [2020-10-14 01:02:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:39,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:39,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 964 [2020-10-14 01:02:39,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:02:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 01:02:39,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:39,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:02:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 01:02:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:39,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:39,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:02:39,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:39,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:02:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:39,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:39,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:39,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:02:39,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:02:39,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:39,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:02:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:39,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:39,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:02:39,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:02:39,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:39,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:02:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:02:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:39,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 01:02:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 01:02:39,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:39,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 01:02:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:02:40,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230647496] [2020-10-14 01:02:40,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:02:40,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:02:40,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564219075] [2020-10-14 01:02:40,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:02:40,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:40,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:02:40,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:02:40,409 INFO L87 Difference]: Start difference. First operand 52627 states and 68583 transitions. Second operand 7 states. [2020-10-14 01:02:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:54,557 INFO L93 Difference]: Finished difference Result 126745 states and 174569 transitions. [2020-10-14 01:02:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:02:54,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 944 [2020-10-14 01:02:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:54,837 INFO L225 Difference]: With dead ends: 126745 [2020-10-14 01:02:54,837 INFO L226 Difference]: Without dead ends: 74958 [2020-10-14 01:02:54,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:02:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74958 states. [2020-10-14 01:02:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74958 to 74572. [2020-10-14 01:02:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74572 states. [2020-10-14 01:02:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74572 states to 74572 states and 98445 transitions. [2020-10-14 01:02:56,515 INFO L78 Accepts]: Start accepts. Automaton has 74572 states and 98445 transitions. Word has length 944 [2020-10-14 01:02:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:56,516 INFO L479 AbstractCegarLoop]: Abstraction has 74572 states and 98445 transitions. [2020-10-14 01:02:56,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:02:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 74572 states and 98445 transitions. [2020-10-14 01:02:56,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-14 01:02:56,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:56,633 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:02:56,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:02:56,633 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1576028803, now seen corresponding path program 1 times [2020-10-14 01:02:56,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:56,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173287858] [2020-10-14 01:02:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:56,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:57,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:01,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:01,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-14 01:03:01,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:03:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 01:03:01,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:01,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-10-14 01:03:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 01:03:01,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:01,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:02,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:02,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:03:02,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:02,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:02,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:02,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:02,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:02,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 01:03:02,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:03:02,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:02,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:02,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:02,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 01:03:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:02,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:02,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:03:02,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:03:02,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:02,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:02,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:02,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 01:03:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:02,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:02,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:03:02,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:02,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:03:02,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:02,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:03:02,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 01:03:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:02,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:03:02,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:03:02,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:02,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 01:03:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 01:03:02,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173287858] [2020-10-14 01:03:02,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:02,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:02,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332946066] [2020-10-14 01:03:02,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:02,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:02,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:02,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:02,745 INFO L87 Difference]: Start difference. First operand 74572 states and 98445 transitions. Second operand 7 states. [2020-10-14 01:03:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:15,102 INFO L93 Difference]: Finished difference Result 179154 states and 251566 transitions. [2020-10-14 01:03:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:03:15,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 965 [2020-10-14 01:03:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:15,606 INFO L225 Difference]: With dead ends: 179154 [2020-10-14 01:03:15,606 INFO L226 Difference]: Without dead ends: 105422 [2020-10-14 01:03:15,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:03:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105422 states. [2020-10-14 01:03:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105422 to 102333. [2020-10-14 01:03:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102333 states. [2020-10-14 01:03:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102333 states to 102333 states and 132836 transitions. [2020-10-14 01:03:18,032 INFO L78 Accepts]: Start accepts. Automaton has 102333 states and 132836 transitions. Word has length 965 [2020-10-14 01:03:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:18,032 INFO L479 AbstractCegarLoop]: Abstraction has 102333 states and 132836 transitions. [2020-10-14 01:03:18,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 102333 states and 132836 transitions. [2020-10-14 01:03:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-14 01:03:18,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:18,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:03:18,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:03:18,130 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:18,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1121378364, now seen corresponding path program 1 times [2020-10-14 01:03:18,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:18,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893646147] [2020-10-14 01:03:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:23,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:23,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-14 01:03:23,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:03:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 01:03:23,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:23,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:03:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 01:03:23,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:23,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:03:23,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:23,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:23,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:03:23,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:03:23,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:23,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:03:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:23,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:03:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:23,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:23,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 01:03:23,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:23,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 01:03:23,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:23,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 01:03:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-14 01:03:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:23,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:23,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:23,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 01:03:23,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:23,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:03:23,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:23,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 01:03:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 252 proven. 57 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 01:03:24,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893646147] [2020-10-14 01:03:24,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:24,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:03:24,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337770471] [2020-10-14 01:03:24,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:03:24,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:24,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:03:24,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:03:24,157 INFO L87 Difference]: Start difference. First operand 102333 states and 132836 transitions. Second operand 7 states. [2020-10-14 01:03:39,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:03:39,567 INFO L93 Difference]: Finished difference Result 227333 states and 305279 transitions. [2020-10-14 01:03:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:03:39,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1002 [2020-10-14 01:03:39,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:03:40,059 INFO L225 Difference]: With dead ends: 227333 [2020-10-14 01:03:40,059 INFO L226 Difference]: Without dead ends: 124986 [2020-10-14 01:03:40,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:03:40,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124986 states. [2020-10-14 01:03:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124986 to 124480. [2020-10-14 01:03:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124480 states. [2020-10-14 01:03:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124480 states to 124480 states and 159225 transitions. [2020-10-14 01:03:41,973 INFO L78 Accepts]: Start accepts. Automaton has 124480 states and 159225 transitions. Word has length 1002 [2020-10-14 01:03:41,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:03:41,974 INFO L479 AbstractCegarLoop]: Abstraction has 124480 states and 159225 transitions. [2020-10-14 01:03:41,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:03:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 124480 states and 159225 transitions. [2020-10-14 01:03:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2020-10-14 01:03:42,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:03:42,129 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:03:42,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:03:42,129 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:03:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:03:42,130 INFO L82 PathProgramCache]: Analyzing trace with hash 406251379, now seen corresponding path program 1 times [2020-10-14 01:03:42,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:03:42,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389977694] [2020-10-14 01:03:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:03:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:45,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:47,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1043 [2020-10-14 01:03:47,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 01:03:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 01:03:47,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:47,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:03:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 01:03:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:47,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:03:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:47,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:47,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:03:47,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:03:47,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:47,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:47,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:03:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:47,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:47,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:03:47,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:03:47,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:47,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:03:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:03:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:03:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:47,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:03:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:47,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:47,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 01:03:47,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 01:03:47,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:47,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:03:47,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:03:47,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 01:03:47,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-14 01:03:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:47,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:03:47,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:03:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:03:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-14 01:03:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:03:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:03:47,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:03:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 01:03:47,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:03:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:03:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:03:47,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:03:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:03:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 01:03:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:03:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:03:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 265 proven. 85 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 01:03:50,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389977694] [2020-10-14 01:03:50,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:03:50,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:03:50,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949721651] [2020-10-14 01:03:50,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:03:50,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:03:50,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:03:50,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:03:50,768 INFO L87 Difference]: Start difference. First operand 124480 states and 159225 transitions. Second operand 8 states.