/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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:39:18,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:39:18,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:39:18,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:39:18,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:39:18,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:39:18,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:39:18,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:39:18,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:39:18,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:39:18,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:39:18,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:39:18,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:39:18,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:39:18,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:39:18,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:39:18,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:39:18,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:39:18,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:39:18,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:39:18,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:39:18,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:39:18,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:39:18,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:39:18,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:39:18,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:39:18,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:39:18,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:39:18,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:39:18,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:39:18,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:39:18,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:39:18,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:39:18,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:39:18,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:39:18,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:39:18,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:39:18,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:39:18,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:39:18,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:39:18,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:39:18,849 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 04:39:18,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:39:18,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:39:18,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:39:18,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:39:18,907 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:39:18,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:39:18,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:39:18,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:39:18,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:39:18,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:39:18,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:39:18,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:39:18,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:39:18,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:39:18,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:39:18,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:39:18,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:39:18,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:39:18,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:39:18,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:39:18,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:39:18,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:39:18,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:39:18,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:39:18,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:39:18,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:39:18,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:39:18,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:39:18,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:39:18,919 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 04:39:19,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:39:19,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:39:19,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:39:19,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:39:19,336 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:39:19,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51.c [2020-10-14 04:39:19,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28959d005/cbc2e9d6206a4a4db7c6cc630295a692/FLAGca6d2461c [2020-10-14 04:39:20,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:39:20,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label51.c [2020-10-14 04:39:20,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28959d005/cbc2e9d6206a4a4db7c6cc630295a692/FLAGca6d2461c [2020-10-14 04:39:20,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28959d005/cbc2e9d6206a4a4db7c6cc630295a692 [2020-10-14 04:39:20,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:39:20,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:39:20,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:39:20,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:39:20,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:39:20,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:39:20" (1/1) ... [2020-10-14 04:39:20,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603d5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:20, skipping insertion in model container [2020-10-14 04:39:20,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:39:20" (1/1) ... [2020-10-14 04:39:20,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:39:21,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:39:24,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:39:24,056 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:39:25,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:39:25,229 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:39:25,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25 WrapperNode [2020-10-14 04:39:25,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:39:25,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:39:25,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:39:25,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:39:25,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (1/1) ... [2020-10-14 04:39:25,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (1/1) ... [2020-10-14 04:39:25,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (1/1) ... [2020-10-14 04:39:25,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (1/1) ... [2020-10-14 04:39:25,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (1/1) ... [2020-10-14 04:39:25,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (1/1) ... [2020-10-14 04:39:25,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (1/1) ... [2020-10-14 04:39:25,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:39:25,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:39:25,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:39:25,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:39:25,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (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 04:39:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:39:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:39:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:39:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:39:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:39:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:39:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:39:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:39:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:39:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:39:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:39:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:39:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:39:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:39:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:39:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:39:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:39:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:39:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:39:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:39:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:39:41,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:39:41,277 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:39:41,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:41 BoogieIcfgContainer [2020-10-14 04:39:41,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:39:41,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:39:41,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:39:41,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:39:41,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:39:20" (1/3) ... [2020-10-14 04:39:41,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d158c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:39:41, skipping insertion in model container [2020-10-14 04:39:41,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:39:25" (2/3) ... [2020-10-14 04:39:41,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d158c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:39:41, skipping insertion in model container [2020-10-14 04:39:41,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:39:41" (3/3) ... [2020-10-14 04:39:41,301 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label51.c [2020-10-14 04:39:41,312 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:39:41,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:39:41,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:39:41,368 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:39:41,368 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:39:41,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:39:41,369 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:39:41,369 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:39:41,369 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:39:41,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:39:41,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:39:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:39:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 04:39:41,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:39:41,425 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] [2020-10-14 04:39:41,426 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:39:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:39:41,433 INFO L82 PathProgramCache]: Analyzing trace with hash 578579204, now seen corresponding path program 1 times [2020-10-14 04:39:41,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:39:41,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882147635] [2020-10-14 04:39:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:39:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:41,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 04:39:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 04:39:41,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:41,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:39:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:39:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 04:39:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:39:41,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:39:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:39:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:39:42,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:39:42,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:39:42,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:39:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:39:42,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:39:42,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:39:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:39:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:39:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:39:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:39:42,029 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 04:39:42,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882147635] [2020-10-14 04:39:42,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:39:42,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:39:42,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476479421] [2020-10-14 04:39:42,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:39:42,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:39:42,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:39:42,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:39:42,057 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:40:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:05,491 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 04:40:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:05,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 04:40:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:05,532 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 04:40:05,533 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 04:40:05,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 04:40:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 04:40:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 04:40:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 04:40:05,811 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 23 [2020-10-14 04:40:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:05,812 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 04:40:05,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:40:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 04:40:05,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 04:40:05,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:05,823 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:40:05,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:40:05,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:05,825 INFO L82 PathProgramCache]: Analyzing trace with hash 803657603, now seen corresponding path program 1 times [2020-10-14 04:40:05,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:05,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622819209] [2020-10-14 04:40:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:07,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:08,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:40:08,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:40:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-14 04:40:08,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:08,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:40:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:08,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:08,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:40:08,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:08,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:40:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:40:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:40:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:08,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:08,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:08,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:40:08,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 04:40:08,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:08,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:40:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:08,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622819209] [2020-10-14 04:40:08,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:40:08,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:40:08,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054670430] [2020-10-14 04:40:08,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:40:08,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:08,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:40:08,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:08,476 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 5 states. [2020-10-14 04:40:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:40:44,658 INFO L93 Difference]: Finished difference Result 9218 states and 14512 transitions. [2020-10-14 04:40:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:40:44,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 04:40:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:40:44,699 INFO L225 Difference]: With dead ends: 9218 [2020-10-14 04:40:44,699 INFO L226 Difference]: Without dead ends: 6040 [2020-10-14 04:40:44,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:40:44,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-10-14 04:40:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6024. [2020-10-14 04:40:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-14 04:40:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8357 transitions. [2020-10-14 04:40:44,906 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8357 transitions. Word has length 96 [2020-10-14 04:40:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:40:44,908 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 8357 transitions. [2020-10-14 04:40:44,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:40:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8357 transitions. [2020-10-14 04:40:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 04:40:44,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:44,917 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:40:44,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:40:44,918 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1022512321, now seen corresponding path program 1 times [2020-10-14 04:40:44,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:44,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101137045] [2020-10-14 04:40:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:44,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:46,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:40:46,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:40:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-14 04:40:46,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:46,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:40:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:40:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:40:46,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:46,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:46,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:46,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:40:46,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:46,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:40:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:40:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:46,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:40:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:46,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:40:46,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 04:40:46,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:46,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:40:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:46,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101137045] [2020-10-14 04:40:46,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:40:46,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:40:46,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622677072] [2020-10-14 04:40:46,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:40:46,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:40:46,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:46,353 INFO L87 Difference]: Start difference. First operand 6024 states and 8357 transitions. Second operand 5 states. [2020-10-14 04:41:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:34,523 INFO L93 Difference]: Finished difference Result 17773 states and 24918 transitions. [2020-10-14 04:41:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:41:34,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-14 04:41:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:34,598 INFO L225 Difference]: With dead ends: 17773 [2020-10-14 04:41:34,601 INFO L226 Difference]: Without dead ends: 11755 [2020-10-14 04:41:34,620 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 04:41:34,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11755 states. [2020-10-14 04:41:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11755 to 11708. [2020-10-14 04:41:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11708 states. [2020-10-14 04:41:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11708 states to 11708 states and 15126 transitions. [2020-10-14 04:41:34,952 INFO L78 Accepts]: Start accepts. Automaton has 11708 states and 15126 transitions. Word has length 96 [2020-10-14 04:41:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:34,955 INFO L479 AbstractCegarLoop]: Abstraction has 11708 states and 15126 transitions. [2020-10-14 04:41:34,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:41:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 11708 states and 15126 transitions. [2020-10-14 04:41:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 04:41:34,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:34,961 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:41:34,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:41:34,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:34,966 INFO L82 PathProgramCache]: Analyzing trace with hash -623473094, now seen corresponding path program 1 times [2020-10-14 04:41:34,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:34,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137960778] [2020-10-14 04:41:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:35,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:35,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:35,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 04:41:35,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:41:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-10-14 04:41:35,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:35,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:41:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:41:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:41:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:35,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:35,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:41:35,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:35,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:36,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:36,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:41:36,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:41:36,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:36,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:41:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:36,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137960778] [2020-10-14 04:41:36,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:41:36,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:41:36,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245497413] [2020-10-14 04:41:36,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:41:36,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:41:36,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:36,197 INFO L87 Difference]: Start difference. First operand 11708 states and 15126 transitions. Second operand 5 states. [2020-10-14 04:42:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:35,767 INFO L93 Difference]: Finished difference Result 29105 states and 38637 transitions. [2020-10-14 04:42:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:42:35,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 04:42:35,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:35,861 INFO L225 Difference]: With dead ends: 29105 [2020-10-14 04:42:35,862 INFO L226 Difference]: Without dead ends: 17403 [2020-10-14 04:42:35,894 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 04:42:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17403 states. [2020-10-14 04:42:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17403 to 17347. [2020-10-14 04:42:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17347 states. [2020-10-14 04:42:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17347 states to 17347 states and 21945 transitions. [2020-10-14 04:42:36,500 INFO L78 Accepts]: Start accepts. Automaton has 17347 states and 21945 transitions. Word has length 104 [2020-10-14 04:42:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:36,511 INFO L479 AbstractCegarLoop]: Abstraction has 17347 states and 21945 transitions. [2020-10-14 04:42:36,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:42:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 17347 states and 21945 transitions. [2020-10-14 04:42:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 04:42:36,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:36,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:42:36,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:42:36,522 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 194005264, now seen corresponding path program 1 times [2020-10-14 04:42:36,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:36,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660694598] [2020-10-14 04:42:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:37,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:37,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 04:42:37,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:42:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-14 04:42:37,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:37,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:42:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:42:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:42:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:42:37,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:37,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:42:37,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:37,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:37,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:37,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:37,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:42:38,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:38,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:42:38,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 04:42:38,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:38,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:42:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:38,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660694598] [2020-10-14 04:42:38,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:42:38,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:42:38,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756184668] [2020-10-14 04:42:38,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:38,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:38,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:38,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:38,303 INFO L87 Difference]: Start difference. First operand 17347 states and 21945 transitions. Second operand 5 states.