/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/Problem17_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:08:14,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:08:14,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:08:14,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:08:14,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:08:14,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:08:14,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:08:14,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:08:14,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:08:14,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:08:14,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:08:14,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:08:14,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:08:14,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:08:14,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:08:14,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:08:14,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:08:14,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:08:14,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:08:14,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:08:14,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:08:14,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:08:14,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:08:14,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:08:14,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:08:14,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:08:14,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:08:14,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:08:14,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:08:14,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:08:14,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:08:14,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:08:14,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:08:14,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:08:14,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:08:14,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:08:14,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:08:14,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:08:14,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:08:14,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:08:14,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:08:14,760 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 04:08:14,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:08:14,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:08:14,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:08:14,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:08:14,785 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:08:14,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:08:14,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:08:14,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:08:14,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:08:14,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:08:14,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:08:14,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:08:14,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:08:14,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:08:14,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:08:14,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:08:14,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:08:14,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:08:14,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:08:14,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:08:14,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:08:14,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:08:14,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:08:14,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:08:14,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:08:14,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:08:14,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:08:14,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:08:14,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:08:14,790 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 04:08:15,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:08:15,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:08:15,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:08:15,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:08:15,203 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:08:15,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-14 04:08:15,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15363173c/81a3ece1bdb94f4094ec658d341b0678/FLAG1a69411e3 [2020-10-14 04:08:16,189 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:08:16,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-14 04:08:16,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15363173c/81a3ece1bdb94f4094ec658d341b0678/FLAG1a69411e3 [2020-10-14 04:08:16,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15363173c/81a3ece1bdb94f4094ec658d341b0678 [2020-10-14 04:08:16,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:08:16,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:08:16,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:08:16,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:08:16,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:08:16,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:08:16" (1/1) ... [2020-10-14 04:08:16,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a32a894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:16, skipping insertion in model container [2020-10-14 04:08:16,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:08:16" (1/1) ... [2020-10-14 04:08:16,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:08:16,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:08:18,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:08:18,224 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:08:18,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:08:18,702 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:08:18,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18 WrapperNode [2020-10-14 04:08:18,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:08:18,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:08:18,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:08:18,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:08:18,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (1/1) ... [2020-10-14 04:08:18,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (1/1) ... [2020-10-14 04:08:18,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (1/1) ... [2020-10-14 04:08:18,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (1/1) ... [2020-10-14 04:08:18,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (1/1) ... [2020-10-14 04:08:18,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (1/1) ... [2020-10-14 04:08:18,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (1/1) ... [2020-10-14 04:08:18,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:08:18,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:08:18,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:08:18,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:08:18,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (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 04:08:19,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:08:19,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:08:19,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:08:19,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:08:19,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:08:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:08:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:08:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:08:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:08:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:08:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:08:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:08:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:08:26,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:08:26,255 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:08:26,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:08:26 BoogieIcfgContainer [2020-10-14 04:08:26,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:08:26,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:08:26,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:08:26,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:08:26,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:08:16" (1/3) ... [2020-10-14 04:08:26,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e0547d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:08:26, skipping insertion in model container [2020-10-14 04:08:26,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:08:18" (2/3) ... [2020-10-14 04:08:26,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e0547d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:08:26, skipping insertion in model container [2020-10-14 04:08:26,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:08:26" (3/3) ... [2020-10-14 04:08:26,291 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label55.c [2020-10-14 04:08:26,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:08:26,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:08:26,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:08:26,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:08:26,381 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:08:26,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:08:26,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:08:26,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:08:26,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:08:26,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:08:26,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:08:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:08:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:08:26,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:26,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:26,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:26,435 INFO L82 PathProgramCache]: Analyzing trace with hash 737483217, now seen corresponding path program 1 times [2020-10-14 04:08:26,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:26,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689081720] [2020-10-14 04:08:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:26,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:26,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 04:08:26,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:26,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 04:08:26,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:26,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:08:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:08:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:08:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:08:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:27,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:27,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:27,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:08:27,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:27,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:08:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:27,188 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 04:08:27,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689081720] [2020-10-14 04:08:27,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:08:27,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:08:27,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856360905] [2020-10-14 04:08:27,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:08:27,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:27,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:08:27,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:08:27,223 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:08:35,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:35,984 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 04:08:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:35,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-14 04:08:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:36,013 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 04:08:36,013 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 04:08:36,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 04:08:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 04:08:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 04:08:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 04:08:36,184 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 17 [2020-10-14 04:08:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:36,185 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 04:08:36,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:08:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 04:08:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 04:08:36,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:36,198 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:08:36,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:08:36,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:36,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1507327641, now seen corresponding path program 1 times [2020-10-14 04:08:36,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:36,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276877709] [2020-10-14 04:08:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:37,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:37,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:08:37,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-14 04:08:37,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:37,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:08:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:08:37,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:37,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:37,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:37,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:37,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:08:37,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:37,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:37,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:37,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:08:37,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 04:08:37,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:37,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:08:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 04:08:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:37,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276877709] [2020-10-14 04:08:37,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:37,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:37,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407234395] [2020-10-14 04:08:37,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:37,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:37,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:37,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:37,554 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 04:08:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:52,952 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 04:08:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:52,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 04:08:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:52,967 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 04:08:52,967 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 04:08:52,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 04:08:53,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 04:08:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 04:08:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 04:08:53,052 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 88 [2020-10-14 04:08:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:53,053 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 04:08:53,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 04:08:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 04:08:53,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:53,057 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:08:53,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:08:53,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:53,058 INFO L82 PathProgramCache]: Analyzing trace with hash -890287815, now seen corresponding path program 1 times [2020-10-14 04:08:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:53,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872485353] [2020-10-14 04:08:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:08:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 04:08:53,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:08:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:08:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:53,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:08:53,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:53,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:08:53,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 04:08:53,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:08:53,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:53,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872485353] [2020-10-14 04:08:53,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:53,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:53,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879062918] [2020-10-14 04:08:53,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:53,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:53,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:53,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:53,781 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-14 04:09:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:08,890 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-14 04:09:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:09:08,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 04:09:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:08,919 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 04:09:08,919 INFO L226 Difference]: Without dead ends: 2781 [2020-10-14 04:09:08,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:09:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-14 04:09:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-14 04:09:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 04:09:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3665 transitions. [2020-10-14 04:09:09,025 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3665 transitions. Word has length 91 [2020-10-14 04:09:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:09,026 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3665 transitions. [2020-10-14 04:09:09,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3665 transitions. [2020-10-14 04:09:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 04:09:09,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:09,029 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:09:09,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:09:09,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:09,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1503499145, now seen corresponding path program 1 times [2020-10-14 04:09:09,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:09,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940638913] [2020-10-14 04:09:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:10,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:10,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:09:10,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:09:10,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-14 04:09:10,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:10,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:09:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:09:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:09:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:10,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:10,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:10,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:09:10,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:10,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:10,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:10,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:10,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:10,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:09:10,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:10,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 04:09:10,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:10,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:09:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:09:10,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940638913] [2020-10-14 04:09:10,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:10,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:09:10,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505316763] [2020-10-14 04:09:10,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:09:10,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:10,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:09:10,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:09:10,644 INFO L87 Difference]: Start difference. First operand 2775 states and 3665 transitions. Second operand 5 states. [2020-10-14 04:09:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:27,784 INFO L93 Difference]: Finished difference Result 8200 states and 10957 transitions. [2020-10-14 04:09:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:09:27,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 04:09:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:27,825 INFO L225 Difference]: With dead ends: 8200 [2020-10-14 04:09:27,826 INFO L226 Difference]: Without dead ends: 5431 [2020-10-14 04:09:27,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:09:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5431 states. [2020-10-14 04:09:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5431 to 5405. [2020-10-14 04:09:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-10-14 04:09:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 6815 transitions. [2020-10-14 04:09:27,984 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 6815 transitions. Word has length 96 [2020-10-14 04:09:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:27,984 INFO L479 AbstractCegarLoop]: Abstraction has 5405 states and 6815 transitions. [2020-10-14 04:09:27,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 6815 transitions. [2020-10-14 04:09:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 04:09:27,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:27,987 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:09:27,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:09:27,988 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:27,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1148552955, now seen corresponding path program 1 times [2020-10-14 04:09:27,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:27,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553735396] [2020-10-14 04:09:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:28,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:28,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:09:28,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-14 04:09:28,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:28,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:09:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:09:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:09:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:28,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:28,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:28,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:09:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:28,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:28,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:09:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:28,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:28,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:09:28,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-14 04:09:28,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:28,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:09:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:09:29,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553735396] [2020-10-14 04:09:29,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:09:29,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:09:29,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765004758] [2020-10-14 04:09:29,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:29,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:29,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:29,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:29,034 INFO L87 Difference]: Start difference. First operand 5405 states and 6815 transitions. Second operand 7 states. [2020-10-14 04:09:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:42,328 INFO L93 Difference]: Finished difference Result 14867 states and 19273 transitions. [2020-10-14 04:09:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:09:42,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-14 04:09:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:42,370 INFO L225 Difference]: With dead ends: 14867 [2020-10-14 04:09:42,371 INFO L226 Difference]: Without dead ends: 7246 [2020-10-14 04:09:42,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:09:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7246 states. [2020-10-14 04:09:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7246 to 6368. [2020-10-14 04:09:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6368 states. [2020-10-14 04:09:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6368 states to 6368 states and 7536 transitions. [2020-10-14 04:09:42,609 INFO L78 Accepts]: Start accepts. Automaton has 6368 states and 7536 transitions. Word has length 114 [2020-10-14 04:09:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:42,610 INFO L479 AbstractCegarLoop]: Abstraction has 6368 states and 7536 transitions. [2020-10-14 04:09:42,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6368 states and 7536 transitions. [2020-10-14 04:09:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 04:09:42,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:42,613 INFO L422 BasicCegarLoop]: trace histogram [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, 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 04:09:42,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:09:42,613 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:42,614 INFO L82 PathProgramCache]: Analyzing trace with hash 891881397, now seen corresponding path program 1 times [2020-10-14 04:09:42,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:42,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583918055] [2020-10-14 04:09:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:42,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:43,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 04:09:43,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:09:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-10-14 04:09:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:43,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:09:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:09:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:43,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:43,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:43,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:43,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:43,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:09:43,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:43,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:43,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:43,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:09:43,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:43,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:09:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:09:44,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 04:09:44,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:09:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:09:44,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583918055] [2020-10-14 04:09:44,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:44,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:44,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806336968] [2020-10-14 04:09:44,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:44,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:44,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:44,352 INFO L87 Difference]: Start difference. First operand 6368 states and 7536 transitions. Second operand 7 states. [2020-10-14 04:10:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:02,629 INFO L93 Difference]: Finished difference Result 14923 states and 17963 transitions. [2020-10-14 04:10:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:10:02,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-14 04:10:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:02,676 INFO L225 Difference]: With dead ends: 14923 [2020-10-14 04:10:02,676 INFO L226 Difference]: Without dead ends: 8561 [2020-10-14 04:10:02,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:10:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8561 states. [2020-10-14 04:10:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8561 to 8553. [2020-10-14 04:10:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8553 states. [2020-10-14 04:10:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8553 states to 8553 states and 9899 transitions. [2020-10-14 04:10:02,924 INFO L78 Accepts]: Start accepts. Automaton has 8553 states and 9899 transitions. Word has length 177 [2020-10-14 04:10:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:02,927 INFO L479 AbstractCegarLoop]: Abstraction has 8553 states and 9899 transitions. [2020-10-14 04:10:02,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 8553 states and 9899 transitions. [2020-10-14 04:10:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 04:10:02,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:02,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:10:02,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:10:02,931 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1048471559, now seen corresponding path program 1 times [2020-10-14 04:10:02,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:02,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145354438] [2020-10-14 04:10:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 04:10:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4354 [2020-10-14 04:10:07,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:07,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:10:07,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:10:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:07,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:07,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:07,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:10:07,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:07,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:07,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:07,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:07,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:07,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:07,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:10:07,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:07,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:07,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:07,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:10:07,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 04:10:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:07,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:10:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:10:07,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145354438] [2020-10-14 04:10:07,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:07,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:10:07,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779905569] [2020-10-14 04:10:07,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:10:07,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:07,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:10:07,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:10:07,743 INFO L87 Difference]: Start difference. First operand 8553 states and 9899 transitions. Second operand 5 states. [2020-10-14 04:10:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:23,517 INFO L93 Difference]: Finished difference Result 22431 states and 26419 transitions. [2020-10-14 04:10:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:23,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-14 04:10:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:23,572 INFO L225 Difference]: With dead ends: 22431 [2020-10-14 04:10:23,573 INFO L226 Difference]: Without dead ends: 13884 [2020-10-14 04:10:23,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13884 states. [2020-10-14 04:10:23,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13884 to 12991. [2020-10-14 04:10:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12991 states. [2020-10-14 04:10:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 15451 transitions. [2020-10-14 04:10:23,870 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 15451 transitions. Word has length 179 [2020-10-14 04:10:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:23,871 INFO L479 AbstractCegarLoop]: Abstraction has 12991 states and 15451 transitions. [2020-10-14 04:10:23,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:10:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 15451 transitions. [2020-10-14 04:10:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 04:10:23,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:23,876 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:10:23,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:10:23,877 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:23,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:23,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1290263764, now seen corresponding path program 1 times [2020-10-14 04:10:23,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:23,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345127833] [2020-10-14 04:10:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:28,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:28,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 04:10:28,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:10:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 04:10:28,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:28,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 04:10:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:10:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:10:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:29,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:29,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:10:29,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:29,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:29,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:29,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:29,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:29,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:10:29,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:29,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:29,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:10:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 04:10:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:29,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:10:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 04:10:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:29,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:10:29,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 04:10:29,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:29,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:10:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 04:10:29,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345127833] [2020-10-14 04:10:29,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:29,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:29,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447234544] [2020-10-14 04:10:29,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:29,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:29,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:29,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:29,548 INFO L87 Difference]: Start difference. First operand 12991 states and 15451 transitions. Second operand 7 states. [2020-10-14 04:10:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:48,392 INFO L93 Difference]: Finished difference Result 31039 states and 37622 transitions. [2020-10-14 04:10:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:10:48,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 04:10:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:48,480 INFO L225 Difference]: With dead ends: 31039 [2020-10-14 04:10:48,480 INFO L226 Difference]: Without dead ends: 18053 [2020-10-14 04:10:48,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 04:10:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2020-10-14 04:10:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 16720. [2020-10-14 04:10:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16720 states. [2020-10-14 04:10:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16720 states to 16720 states and 19961 transitions. [2020-10-14 04:10:49,007 INFO L78 Accepts]: Start accepts. Automaton has 16720 states and 19961 transitions. Word has length 275 [2020-10-14 04:10:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:49,008 INFO L479 AbstractCegarLoop]: Abstraction has 16720 states and 19961 transitions. [2020-10-14 04:10:49,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16720 states and 19961 transitions. [2020-10-14 04:10:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 04:10:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:49,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:10:49,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:10:49,020 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:49,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1033197753, now seen corresponding path program 1 times [2020-10-14 04:10:49,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:49,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703018006] [2020-10-14 04:10:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 04:10:54,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:10:54,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 04:10:54,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:10:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:10:54,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:54,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:10:54,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:10:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:10:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:10:54,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:10:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:10:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:10:54,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 04:10:54,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:54,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:54,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:10:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 04:10:54,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703018006] [2020-10-14 04:10:54,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:54,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:54,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582954307] [2020-10-14 04:10:54,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:54,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:54,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:54,941 INFO L87 Difference]: Start difference. First operand 16720 states and 19961 transitions. Second operand 7 states. [2020-10-14 04:11:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:17,005 INFO L93 Difference]: Finished difference Result 36158 states and 43862 transitions. [2020-10-14 04:11:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:11:17,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-14 04:11:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:17,064 INFO L225 Difference]: With dead ends: 36158 [2020-10-14 04:11:17,065 INFO L226 Difference]: Without dead ends: 19004 [2020-10-14 04:11:17,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:11:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19004 states. [2020-10-14 04:11:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19004 to 16784. [2020-10-14 04:11:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16784 states. [2020-10-14 04:11:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16784 states to 16784 states and 20116 transitions. [2020-10-14 04:11:17,463 INFO L78 Accepts]: Start accepts. Automaton has 16784 states and 20116 transitions. Word has length 278 [2020-10-14 04:11:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:17,464 INFO L479 AbstractCegarLoop]: Abstraction has 16784 states and 20116 transitions. [2020-10-14 04:11:17,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 16784 states and 20116 transitions. [2020-10-14 04:11:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 04:11:17,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:17,471 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:11:17,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:11:17,472 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash -91838193, now seen corresponding path program 1 times [2020-10-14 04:11:17,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:17,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238371081] [2020-10-14 04:11:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2843 [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:11:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:11:20,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:11:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:20,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:11:20,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:20,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 04:11:20,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:11:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:20,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:11:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:21,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:21,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:11:21,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 04:11:21,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:21,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:21,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:21,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:11:21,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:11:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:21,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:21,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:11:21,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 04:11:21,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:21,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:11:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 118 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 04:11:21,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238371081] [2020-10-14 04:11:21,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:21,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:11:21,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263703929] [2020-10-14 04:11:21,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:11:21,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:21,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:11:21,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:11:21,880 INFO L87 Difference]: Start difference. First operand 16784 states and 20116 transitions. Second operand 8 states. [2020-10-14 04:11:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:44,162 INFO L93 Difference]: Finished difference Result 36753 states and 43982 transitions. [2020-10-14 04:11:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:11:44,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 301 [2020-10-14 04:11:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:44,218 INFO L225 Difference]: With dead ends: 36753 [2020-10-14 04:11:44,219 INFO L226 Difference]: Without dead ends: 19975 [2020-10-14 04:11:44,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:11:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19975 states. [2020-10-14 04:11:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19975 to 19942. [2020-10-14 04:11:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19942 states. [2020-10-14 04:11:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19942 states to 19942 states and 23769 transitions. [2020-10-14 04:11:44,605 INFO L78 Accepts]: Start accepts. Automaton has 19942 states and 23769 transitions. Word has length 301 [2020-10-14 04:11:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:44,606 INFO L479 AbstractCegarLoop]: Abstraction has 19942 states and 23769 transitions. [2020-10-14 04:11:44,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:11:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 19942 states and 23769 transitions. [2020-10-14 04:11:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 04:11:44,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:44,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:11:44,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:11:44,617 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash -215786294, now seen corresponding path program 1 times [2020-10-14 04:11:44,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:44,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257397729] [2020-10-14 04:11:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:49,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:49,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 04:11:49,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:11:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 04:11:49,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:49,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-14 04:11:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 04:11:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:49,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:49,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:11:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:49,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:49,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:49,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:49,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:11:49,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:49,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:11:49,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:49,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:49,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:49,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:49,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:11:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:50,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:50,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:11:50,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:50,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 04:11:50,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:50,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 04:11:50,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-14 04:11:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:11:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:11:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:50,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:11:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:11:50,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257397729] [2020-10-14 04:11:50,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:50,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:11:50,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078696068] [2020-10-14 04:11:50,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:11:50,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:11:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:11:50,585 INFO L87 Difference]: Start difference. First operand 19942 states and 23769 transitions. Second operand 7 states.