/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=NARROWEST --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/Problem06_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:06:28,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:06:28,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:06:28,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:06:28,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:06:28,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:06:28,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:06:28,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:06:28,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:06:28,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:06:28,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:06:28,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:06:28,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:06:28,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:06:28,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:06:28,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:06:28,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:06:28,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:06:28,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:06:28,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:06:28,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:06:28,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:06:28,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:06:28,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:06:28,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:06:28,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:06:28,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:06:28,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:06:28,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:06:28,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:06:28,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:06:28,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:06:28,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:06:28,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:06:28,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:06:28,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:06:28,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:06:28,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:06:28,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:06:28,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:06:28,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:06:28,923 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 [2020-10-13 07:06:28,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:06:28,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:06:28,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:06:28,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:06:28,965 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:06:28,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:06:28,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:06:28,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:06:28,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:06:28,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:06:28,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:06:28,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:06:28,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:06:28,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:06:28,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:06:28,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:06:28,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:06:28,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:06:28,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:06:28,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:06:28,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:06:28,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:06:28,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:06:28,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:06:28,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:06:28,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:06:28,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:06:28,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:06:28,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:06:28,971 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:06:29,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:06:29,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:06:29,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:06:29,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:06:29,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:06:29,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label26.c [2020-10-13 07:06:29,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8b8ac018/a13af79ba1cc45d68769f0f0e28d6c72/FLAG5aa5d73e9 [2020-10-13 07:06:30,253 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:06:30,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label26.c [2020-10-13 07:06:30,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8b8ac018/a13af79ba1cc45d68769f0f0e28d6c72/FLAG5aa5d73e9 [2020-10-13 07:06:30,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8b8ac018/a13af79ba1cc45d68769f0f0e28d6c72 [2020-10-13 07:06:30,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:06:30,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:06:30,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:30,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:06:30,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:06:30,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:30" (1/1) ... [2020-10-13 07:06:30,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35692340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:30, skipping insertion in model container [2020-10-13 07:06:30,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:30" (1/1) ... [2020-10-13 07:06:30,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:06:30,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:06:32,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:32,945 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:06:34,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:06:34,108 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:06:34,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34 WrapperNode [2020-10-13 07:06:34,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:06:34,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:06:34,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:06:34,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:06:34,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (1/1) ... [2020-10-13 07:06:34,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (1/1) ... [2020-10-13 07:06:34,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (1/1) ... [2020-10-13 07:06:34,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (1/1) ... [2020-10-13 07:06:34,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (1/1) ... [2020-10-13 07:06:34,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (1/1) ... [2020-10-13 07:06:34,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (1/1) ... [2020-10-13 07:06:34,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:06:34,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:06:34,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:06:34,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:06:34,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (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 [2020-10-13 07:06:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:06:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:06:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:06:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:06:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:06:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:06:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:06:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:06:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:06:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:06:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:06:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:06:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:06:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:06:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:06:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:06:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:06:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:06:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:06:41,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:06:41,088 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:06:41,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:41 BoogieIcfgContainer [2020-10-13 07:06:41,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:06:41,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:06:41,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:06:41,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:06:41,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:06:30" (1/3) ... [2020-10-13 07:06:41,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2819ca2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:41, skipping insertion in model container [2020-10-13 07:06:41,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:34" (2/3) ... [2020-10-13 07:06:41,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2819ca2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:41, skipping insertion in model container [2020-10-13 07:06:41,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:41" (3/3) ... [2020-10-13 07:06:41,111 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label26.c [2020-10-13 07:06:41,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:06:41,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:06:41,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:06:41,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:06:41,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:06:41,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:06:41,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:06:41,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:06:41,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:06:41,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:06:41,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:06:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:06:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-13 07:06:41,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:41,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:06:41,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1415282104, now seen corresponding path program 1 times [2020-10-13 07:06:41,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:41,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847434119] [2020-10-13 07:06:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-13 07:06:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:06:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 07:06:47,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:06:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:06:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:06:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 07:06:50,017 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2020-10-13 07:06:50,275 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:06:50,488 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:06:50,759 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:06:50,952 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-13 07:06:51,150 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:06:51,334 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:06:51,524 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-13 07:06:51,684 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-13 07:06:51,825 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-13 07:06:51,969 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-10-13 07:06:52,415 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:06:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:06:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:52,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:52,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:06:52,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:06:52,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:06:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:06:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:06:52,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:52,657 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-13 07:07:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:07:02,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847434119] [2020-10-13 07:07:02,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:07:02,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 07:07:02,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317169767] [2020-10-13 07:07:02,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 07:07:02,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:02,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 07:07:02,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-13 07:07:02,976 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 20 states. [2020-10-13 07:07:03,331 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 07:07:03,944 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 168 [2020-10-13 07:07:04,558 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 168 [2020-10-13 07:07:05,237 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 176 [2020-10-13 07:07:08,752 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 175 [2020-10-13 07:07:11,732 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 174 [2020-10-13 07:07:13,903 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 165 [2020-10-13 07:07:14,533 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 171 [2020-10-13 07:07:15,372 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 170 [2020-10-13 07:07:23,780 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 163 [2020-10-13 07:07:24,374 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 168 [2020-10-13 07:07:26,970 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 167 [2020-10-13 07:07:33,502 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2020-10-13 07:07:34,120 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 165 [2020-10-13 07:07:36,258 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 163 [2020-10-13 07:07:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:07:47,203 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:07:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:07:47,204 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 971 [2020-10-13 07:07:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:07:47,261 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:07:47,261 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:07:47,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 07:07:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:07:47,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:07:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:07:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:07:47,432 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 971 [2020-10-13 07:07:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:07:47,434 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:07:47,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 07:07:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:07:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-13 07:07:47,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:07:47,480 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:07:47,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:07:47,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:07:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:07:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash 26546181, now seen corresponding path program 1 times [2020-10-13 07:07:47,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:07:47,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5409590] [2020-10-13 07:07:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:07:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:53,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1059 [2020-10-13 07:07:53,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:07:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-13 07:07:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:07:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:07:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:07:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:53,453 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:07:53,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:07:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:53,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:07:53,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 07:07:53,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:07:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:07:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:07:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:07:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:07:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:07:53,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:07:53,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:07:53,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:07:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-13 07:07:53,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:07:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:07:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:07:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:07:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:07:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:07:55,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5409590] [2020-10-13 07:07:55,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:07:55,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:07:55,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692174473] [2020-10-13 07:07:55,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:07:55,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:07:55,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:07:55,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:07:55,537 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:07:55,694 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 07:07:56,765 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:08:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:08:14,978 INFO L93 Difference]: Finished difference Result 4485 states and 7524 transitions. [2020-10-13 07:08:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:08:14,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1041 [2020-10-13 07:08:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:08:14,996 INFO L225 Difference]: With dead ends: 4485 [2020-10-13 07:08:14,996 INFO L226 Difference]: Without dead ends: 3226 [2020-10-13 07:08:15,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:08:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2020-10-13 07:08:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3154. [2020-10-13 07:08:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-10-13 07:08:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4665 transitions. [2020-10-13 07:08:15,088 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4665 transitions. Word has length 1041 [2020-10-13 07:08:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:08:15,089 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 4665 transitions. [2020-10-13 07:08:15,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:08:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4665 transitions. [2020-10-13 07:08:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2020-10-13 07:08:15,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:08:15,108 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:08:15,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:08:15,109 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:08:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:08:15,109 INFO L82 PathProgramCache]: Analyzing trace with hash -660474910, now seen corresponding path program 1 times [2020-10-13 07:08:15,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:08:15,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815910021] [2020-10-13 07:08:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:08:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:20,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:20,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1111 [2020-10-13 07:08:20,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:08:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 07:08:20,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:20,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 07:08:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:08:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-13 07:08:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:22,214 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:08:22,481 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:08:22,635 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 07:08:22,777 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-13 07:08:23,338 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:08:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:08:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:23,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:23,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:08:23,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 07:08:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:08:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:08:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:08:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:08:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:08:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:08:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:08:23,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:08:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:08:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:08:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-13 07:08:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:08:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:08:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:08:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:08:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:08:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:08:31,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815910021] [2020-10-13 07:08:31,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:08:31,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 07:08:31,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170034401] [2020-10-13 07:08:31,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 07:08:31,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:08:31,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 07:08:31,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 07:08:31,911 INFO L87 Difference]: Start difference. First operand 3154 states and 4665 transitions. Second operand 18 states. [2020-10-13 07:08:32,137 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 07:08:33,992 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 76 [2020-10-13 07:08:34,240 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-10-13 07:08:34,556 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2020-10-13 07:08:35,201 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 170 [2020-10-13 07:08:35,891 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 178 [2020-10-13 07:08:37,055 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 177 [2020-10-13 07:08:40,187 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 176 [2020-10-13 07:08:48,265 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 166 [2020-10-13 07:08:49,040 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 172 [2020-10-13 07:08:50,283 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 171 [2020-10-13 07:08:58,720 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 170 [2020-10-13 07:08:59,734 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 168 [2020-10-13 07:09:21,503 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-13 07:09:21,735 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-13 07:09:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:09:21,796 INFO L93 Difference]: Finished difference Result 8467 states and 13466 transitions. [2020-10-13 07:09:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 07:09:21,797 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1093 [2020-10-13 07:09:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:09:21,825 INFO L225 Difference]: With dead ends: 8467 [2020-10-13 07:09:21,825 INFO L226 Difference]: Without dead ends: 6073 [2020-10-13 07:09:21,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 07:09:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6073 states. [2020-10-13 07:09:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6073 to 5969. [2020-10-13 07:09:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5969 states. [2020-10-13 07:09:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 8904 transitions. [2020-10-13 07:09:21,974 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 8904 transitions. Word has length 1093 [2020-10-13 07:09:21,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:09:21,975 INFO L479 AbstractCegarLoop]: Abstraction has 5969 states and 8904 transitions. [2020-10-13 07:09:21,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 07:09:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 8904 transitions. [2020-10-13 07:09:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2020-10-13 07:09:22,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:09:22,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:09:22,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:09:22,032 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:09:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:09:22,032 INFO L82 PathProgramCache]: Analyzing trace with hash 322025877, now seen corresponding path program 1 times [2020-10-13 07:09:22,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:09:22,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164518568] [2020-10-13 07:09:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:09:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:27,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:27,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1138 [2020-10-13 07:09:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:09:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5279 [2020-10-13 07:09:27,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 07:09:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:09:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 891 [2020-10-13 07:09:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 07:09:31,450 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-13 07:09:31,682 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-13 07:09:31,879 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-13 07:09:32,392 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2020-10-13 07:09:32,725 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2020-10-13 07:09:33,099 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 67 [2020-10-13 07:09:33,379 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2020-10-13 07:09:33,695 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2020-10-13 07:09:33,898 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-13 07:09:34,070 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-13 07:09:34,227 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-13 07:09:34,597 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:09:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:09:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:09:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:09:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:09:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:34,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:34,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:09:34,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 07:09:34,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:09:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:09:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:09:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:35,708 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-13 07:09:36,108 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-10-13 07:09:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:09:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:09:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:09:36,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:09:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:09:36,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:09:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 07:09:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:09:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 07:09:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:09:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:09:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:09:37,059 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 07:09:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 23 proven. 142 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:09:53,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164518568] [2020-10-13 07:09:53,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:09:53,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 07:09:53,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514664249] [2020-10-13 07:09:53,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 07:09:53,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:09:53,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 07:09:53,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-10-13 07:09:53,333 INFO L87 Difference]: Start difference. First operand 5969 states and 8904 transitions. Second operand 25 states. [2020-10-13 07:09:53,606 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 07:09:55,982 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-13 07:09:56,401 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 07:09:57,451 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2020-10-13 07:09:57,804 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-10-13 07:09:58,284 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 82 [2020-10-13 07:09:59,076 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 170 [2020-10-13 07:09:59,930 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 180 [2020-10-13 07:10:03,954 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 141 [2020-10-13 07:10:06,998 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-13 07:10:09,957 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-13 07:10:11,162 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 149 [2020-10-13 07:10:14,898 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 44 [2020-10-13 07:10:16,027 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 137