/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/Problem19_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:32:59,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:32:59,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:32:59,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:32:59,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:32:59,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:32:59,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:32:59,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:32:59,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:32:59,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:32:59,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:32:59,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:32:59,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:32:59,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:32:59,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:32:59,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:32:59,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:32:59,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:32:59,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:32:59,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:32:59,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:32:59,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:32:59,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:32:59,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:32:59,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:32:59,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:32:59,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:32:59,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:32:59,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:32:59,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:32:59,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:32:59,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:32:59,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:32:59,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:32:59,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:32:59,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:32:59,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:32:59,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:32:59,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:32:59,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:32:59,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:32:59,715 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 04:32:59,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:32:59,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:32:59,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:32:59,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:32:59,788 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:32:59,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:32:59,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:32:59,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:32:59,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:32:59,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:32:59,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:32:59,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:32:59,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:32:59,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:32:59,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:32:59,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:32:59,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:32:59,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:32:59,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:32:59,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:32:59,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:32:59,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:32:59,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:32:59,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:32:59,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:32:59,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:32:59,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:32:59,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:32:59,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:32:59,799 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 04:33:00,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:33:00,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:33:00,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:33:00,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:33:00,217 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:33:00,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28.c [2020-10-14 04:33:00,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/529cf6e9a/436fd7f9e9904bdab36c832f52a2ff0c/FLAGd9109aa90 [2020-10-14 04:33:01,487 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:33:01,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label28.c [2020-10-14 04:33:01,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/529cf6e9a/436fd7f9e9904bdab36c832f52a2ff0c/FLAGd9109aa90 [2020-10-14 04:33:01,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/529cf6e9a/436fd7f9e9904bdab36c832f52a2ff0c [2020-10-14 04:33:01,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:33:01,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:33:01,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:33:01,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:33:01,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:33:01,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:33:01" (1/1) ... [2020-10-14 04:33:01,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbf213c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:01, skipping insertion in model container [2020-10-14 04:33:01,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:33:01" (1/1) ... [2020-10-14 04:33:01,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:33:02,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:33:04,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:33:04,711 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:33:05,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:33:05,997 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:33:06,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06 WrapperNode [2020-10-14 04:33:06,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:33:06,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:33:06,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:33:06,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:33:06,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (1/1) ... [2020-10-14 04:33:06,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (1/1) ... [2020-10-14 04:33:06,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (1/1) ... [2020-10-14 04:33:06,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (1/1) ... [2020-10-14 04:33:06,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (1/1) ... [2020-10-14 04:33:06,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (1/1) ... [2020-10-14 04:33:06,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (1/1) ... [2020-10-14 04:33:06,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:33:06,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:33:06,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:33:06,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:33:06,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (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 04:33:06,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:33:06,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:33:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:33:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:33:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:33:06,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:33:06,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:33:06,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:33:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:33:25,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:33:25,516 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:33:25,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:25 BoogieIcfgContainer [2020-10-14 04:33:25,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:33:25,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:33:25,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:33:25,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:33:25,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:33:01" (1/3) ... [2020-10-14 04:33:25,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f769f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:25, skipping insertion in model container [2020-10-14 04:33:25,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:06" (2/3) ... [2020-10-14 04:33:25,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f769f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:25, skipping insertion in model container [2020-10-14 04:33:25,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:25" (3/3) ... [2020-10-14 04:33:25,551 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label28.c [2020-10-14 04:33:25,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:33:25,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:33:25,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:33:25,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:33:25,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:33:25,643 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:33:25,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:33:25,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:33:25,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:33:25,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:33:25,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:33:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:33:25,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 04:33:25,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:33:25,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:33:25,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:33:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:33:25,731 INFO L82 PathProgramCache]: Analyzing trace with hash -647832228, now seen corresponding path program 1 times [2020-10-14 04:33:25,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:33:25,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620612558] [2020-10-14 04:33:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:33:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:26,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:26,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:33:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 04:33:26,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:26,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:33:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:33:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:33:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:33:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:33:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:26,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:26,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:33:26,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:33:26,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:26,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:33:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:33:26,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:26,710 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 04:33:26,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620612558] [2020-10-14 04:33:26,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:33:26,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:33:26,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798134417] [2020-10-14 04:33:26,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:33:26,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:33:26,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:33:26,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:33:26,756 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:33:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:33:54,450 INFO L93 Difference]: Finished difference Result 5095 states and 9566 transitions. [2020-10-14 04:33:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:33:54,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 04:33:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:33:54,505 INFO L225 Difference]: With dead ends: 5095 [2020-10-14 04:33:54,505 INFO L226 Difference]: Without dead ends: 3254 [2020-10-14 04:33:54,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 04:33:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2020-10-14 04:33:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3208. [2020-10-14 04:33:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-14 04:33:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5177 transitions. [2020-10-14 04:33:54,789 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5177 transitions. Word has length 29 [2020-10-14 04:33:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:33:54,789 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 5177 transitions. [2020-10-14 04:33:54,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:33:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5177 transitions. [2020-10-14 04:33:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 04:33:54,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:33:54,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:33:54,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:33:54,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:33:54,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:33:54,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1060622502, now seen corresponding path program 1 times [2020-10-14 04:33:54,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:33:54,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215509544] [2020-10-14 04:33:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:33:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:56,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:56,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 04:33:56,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:33:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-14 04:33:56,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:56,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:33:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:33:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:33:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:33:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:56,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:56,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:33:56,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:33:56,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:56,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:33:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:33:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:56,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:33:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:33:56,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 04:33:56,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:56,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:33:56,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215509544] [2020-10-14 04:33:56,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:33:56,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:33:56,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431760937] [2020-10-14 04:33:56,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:33:56,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:33:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:33:56,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:33:56,954 INFO L87 Difference]: Start difference. First operand 3208 states and 5177 transitions. Second operand 5 states. [2020-10-14 04:34:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:34:34,055 INFO L93 Difference]: Finished difference Result 9294 states and 15168 transitions. [2020-10-14 04:34:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:34:34,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 04:34:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:34:34,112 INFO L225 Difference]: With dead ends: 9294 [2020-10-14 04:34:34,112 INFO L226 Difference]: Without dead ends: 6092 [2020-10-14 04:34:34,124 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 04:34:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6092 states. [2020-10-14 04:34:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6092 to 6078. [2020-10-14 04:34:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6078 states. [2020-10-14 04:34:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 8963 transitions. [2020-10-14 04:34:34,373 INFO L78 Accepts]: Start accepts. Automaton has 6078 states and 8963 transitions. Word has length 104 [2020-10-14 04:34:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:34:34,378 INFO L479 AbstractCegarLoop]: Abstraction has 6078 states and 8963 transitions. [2020-10-14 04:34:34,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:34:34,378 INFO L276 IsEmpty]: Start isEmpty. Operand 6078 states and 8963 transitions. [2020-10-14 04:34:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 04:34:34,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:34:34,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:34:34,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:34:34,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:34:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:34:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1088472808, now seen corresponding path program 1 times [2020-10-14 04:34:34,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:34:34,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460578960] [2020-10-14 04:34:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:34:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:34,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:35,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 04:34:35,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:34:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-14 04:34:35,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:35,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:34:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:34:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:34:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:34:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:34:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:34:35,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:35,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:34:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:34:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:34:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:35,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:35,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:34:35,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:35,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 04:34:35,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:35,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:34:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:34:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:34:35,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460578960] [2020-10-14 04:34:35,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:34:35,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:34:35,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060185787] [2020-10-14 04:34:35,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:34:35,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:34:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:34:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:34:35,866 INFO L87 Difference]: Start difference. First operand 6078 states and 8963 transitions. Second operand 6 states. [2020-10-14 04:35:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:35:38,212 INFO L93 Difference]: Finished difference Result 17949 states and 28029 transitions. [2020-10-14 04:35:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:35:38,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-14 04:35:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:35:38,284 INFO L225 Difference]: With dead ends: 17949 [2020-10-14 04:35:38,284 INFO L226 Difference]: Without dead ends: 11877 [2020-10-14 04:35:38,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:35:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2020-10-14 04:35:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 11758. [2020-10-14 04:35:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11758 states. [2020-10-14 04:35:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11758 states to 11758 states and 17474 transitions. [2020-10-14 04:35:38,632 INFO L78 Accepts]: Start accepts. Automaton has 11758 states and 17474 transitions. Word has length 105 [2020-10-14 04:35:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:35:38,634 INFO L479 AbstractCegarLoop]: Abstraction has 11758 states and 17474 transitions. [2020-10-14 04:35:38,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:35:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11758 states and 17474 transitions. [2020-10-14 04:35:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 04:35:38,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:35:38,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:35:38,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:35:38,644 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:35:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:35:38,644 INFO L82 PathProgramCache]: Analyzing trace with hash 634036524, now seen corresponding path program 1 times [2020-10-14 04:35:38,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:35:38,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130624896] [2020-10-14 04:35:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:35:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:40,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:40,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:35:40,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:35:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-10-14 04:35:40,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:40,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:35:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 04:35:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:35:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:40,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:35:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:40,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:35:40,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:40,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:35:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:35:40,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:35:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:40,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:35:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:40,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:40,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:35:40,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 04:35:40,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:40,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:35:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:35:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:35:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:35:40,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130624896] [2020-10-14 04:35:40,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:35:40,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:35:40,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631943983] [2020-10-14 04:35:40,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:35:40,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:35:40,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:35:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:35:40,763 INFO L87 Difference]: Start difference. First operand 11758 states and 17474 transitions. Second operand 5 states. [2020-10-14 04:36:35,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:36:35,844 INFO L93 Difference]: Finished difference Result 34796 states and 52918 transitions. [2020-10-14 04:36:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:36:35,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-14 04:36:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:36:35,967 INFO L225 Difference]: With dead ends: 34796 [2020-10-14 04:36:35,967 INFO L226 Difference]: Without dead ends: 23044 [2020-10-14 04:36:36,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:36:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23044 states. [2020-10-14 04:36:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23044 to 23033. [2020-10-14 04:36:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23033 states. [2020-10-14 04:36:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23033 states to 23033 states and 34003 transitions. [2020-10-14 04:36:36,755 INFO L78 Accepts]: Start accepts. Automaton has 23033 states and 34003 transitions. Word has length 115 [2020-10-14 04:36:36,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:36:36,757 INFO L479 AbstractCegarLoop]: Abstraction has 23033 states and 34003 transitions. [2020-10-14 04:36:36,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:36:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 23033 states and 34003 transitions. [2020-10-14 04:36:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 04:36:36,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:36:36,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:36:36,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:36:36,765 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:36:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:36:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash 316992886, now seen corresponding path program 1 times [2020-10-14 04:36:36,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:36:36,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088736011] [2020-10-14 04:36:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:36:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:37,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:37,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 04:36:37,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:36:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-14 04:36:37,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:37,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:36:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:36:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:37,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:36:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:37,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:36:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:36:37,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:36:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:36:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:36:38,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:36:38,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:36:38,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:36:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 04:36:38,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:36:38,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:36:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:36:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:36:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:36:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:36:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:36:38,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088736011] [2020-10-14 04:36:38,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:36:38,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:36:38,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136808390] [2020-10-14 04:36:38,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:36:38,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:36:38,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:36:38,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:36:38,119 INFO L87 Difference]: Start difference. First operand 23033 states and 34003 transitions. Second operand 5 states.