/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=BIGGEST --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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:22:24,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:22:24,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:22:25,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:22:25,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:22:25,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:22:25,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:22:25,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:22:25,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:22:25,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:22:25,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:22:25,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:22:25,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:22:25,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:22:25,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:22:25,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:22:25,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:22:25,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:22:25,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:22:25,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:22:25,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:22:25,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:22:25,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:22:25,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:22:25,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:22:25,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:22:25,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:22:25,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:22:25,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:22:25,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:22:25,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:22:25,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:22:25,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:22:25,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:22:25,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:22:25,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:22:25,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:22:25,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:22:25,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:22:25,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:22:25,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:22:25,099 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 [2020-10-12 15:22:25,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:22:25,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:22:25,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:22:25,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:22:25,145 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:22:25,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:22:25,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:22:25,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:22:25,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:22:25,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:22:25,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:22:25,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:22:25,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:22:25,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:22:25,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:22:25,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:22:25,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:22:25,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:22:25,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:22:25,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:22:25,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:22:25,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:22:25,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:22:25,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:22:25,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:22:25,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:22:25,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:22:25,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:22:25,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:22:25,151 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:22:25,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:22:25,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:22:25,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:22:25,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:22:25,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:22:25,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-12 15:22:25,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe88de612/0e730ef9b8544f06857b85fd6f5061ec/FLAG89a86cde2 [2020-10-12 15:22:26,523 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:22:26,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-12 15:22:26,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe88de612/0e730ef9b8544f06857b85fd6f5061ec/FLAG89a86cde2 [2020-10-12 15:22:26,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe88de612/0e730ef9b8544f06857b85fd6f5061ec [2020-10-12 15:22:26,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:22:26,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:22:26,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:22:26,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:22:26,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:22:26,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:22:26" (1/1) ... [2020-10-12 15:22:26,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:26, skipping insertion in model container [2020-10-12 15:22:26,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:22:26" (1/1) ... [2020-10-12 15:22:26,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:22:27,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:22:29,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:22:29,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:22:30,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:22:30,401 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:22:30,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30 WrapperNode [2020-10-12 15:22:30,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:22:30,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:22:30,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:22:30,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:22:30,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (1/1) ... [2020-10-12 15:22:30,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (1/1) ... [2020-10-12 15:22:30,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (1/1) ... [2020-10-12 15:22:30,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (1/1) ... [2020-10-12 15:22:30,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (1/1) ... [2020-10-12 15:22:30,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (1/1) ... [2020-10-12 15:22:30,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (1/1) ... [2020-10-12 15:22:30,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:22:30,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:22:30,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:22:30,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:22:30,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (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 [2020-10-12 15:22:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:22:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:22:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 15:22:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 15:22:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 15:22:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 15:22:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 15:22:31,070 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 15:22:31,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:22:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 15:22:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 15:22:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 15:22:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 15:22:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 15:22:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 15:22:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:22:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:22:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:22:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:22:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:22:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:22:42,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:22:42,940 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:22:42,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:22:42 BoogieIcfgContainer [2020-10-12 15:22:42,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:22:42,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:22:42,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:22:42,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:22:42,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:22:26" (1/3) ... [2020-10-12 15:22:42,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c77f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:22:42, skipping insertion in model container [2020-10-12 15:22:42,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:22:30" (2/3) ... [2020-10-12 15:22:42,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c77f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:22:42, skipping insertion in model container [2020-10-12 15:22:42,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:22:42" (3/3) ... [2020-10-12 15:22:42,969 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label46.c [2020-10-12 15:22:42,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:22:42,995 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:22:43,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:22:43,040 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:22:43,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:22:43,041 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:22:43,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:22:43,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:22:43,041 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:22:43,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:22:43,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:22:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-12 15:22:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:22:43,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:22:43,098 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] [2020-10-12 15:22:43,098 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:22:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:22:43,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1491137538, now seen corresponding path program 1 times [2020-10-12 15:22:43,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:22:43,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244088955] [2020-10-12 15:22:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:22:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:22:43,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:22:43,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:22:43,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:22:43,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:22:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-12 15:22:43,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:22:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:22:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:22:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:22:43,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:22:43,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:22:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:22:43,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:22:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:22:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:22:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:22:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:22:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:22:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:22:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:22:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:22:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:22:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:22:43,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244088955] [2020-10-12 15:22:43,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:22:43,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:22:43,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985898745] [2020-10-12 15:22:43,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:22:43,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:22:43,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:22:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:22:43,938 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-12 15:23:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:23:04,797 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-12 15:23:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:23:04,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-12 15:23:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:23:04,839 INFO L225 Difference]: With dead ends: 5031 [2020-10-12 15:23:04,840 INFO L226 Difference]: Without dead ends: 3190 [2020-10-12 15:23:04,853 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 [2020-10-12 15:23:04,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-12 15:23:05,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-12 15:23:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-12 15:23:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-12 15:23:05,068 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 38 [2020-10-12 15:23:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:23:05,069 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-12 15:23:05,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:23:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-12 15:23:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 15:23:05,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:23:05,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:23:05,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:23:05,076 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:23:05,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:23:05,077 INFO L82 PathProgramCache]: Analyzing trace with hash -870554780, now seen corresponding path program 1 times [2020-10-12 15:23:05,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:23:05,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862723113] [2020-10-12 15:23:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:23:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:23:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:06,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:07,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:23:07,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 15:23:07,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:23:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2191 [2020-10-12 15:23:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:23:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 15:23:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:23:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:23:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:23:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:07,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:23:07,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:23:07,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:23:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:23:07,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:23:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:23:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:23:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:23:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:23:07,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:23:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:23:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:07,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:23:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:23:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:23:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-12 15:23:07,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:23:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:23:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:23:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:23:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:23:07,962 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:23:07,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862723113] [2020-10-12 15:23:07,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:23:07,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:23:07,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942820694] [2020-10-12 15:23:07,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:23:07,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:23:07,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:23:07,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:23:07,967 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 7 states. [2020-10-12 15:23:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:23:50,251 INFO L93 Difference]: Finished difference Result 9441 states and 14845 transitions. [2020-10-12 15:23:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:23:50,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-12 15:23:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:23:50,293 INFO L225 Difference]: With dead ends: 9441 [2020-10-12 15:23:50,293 INFO L226 Difference]: Without dead ends: 6263 [2020-10-12 15:23:50,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:23:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2020-10-12 15:23:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6103. [2020-10-12 15:23:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6103 states. [2020-10-12 15:23:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 8447 transitions. [2020-10-12 15:23:50,512 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 8447 transitions. Word has length 111 [2020-10-12 15:23:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:23:50,514 INFO L479 AbstractCegarLoop]: Abstraction has 6103 states and 8447 transitions. [2020-10-12 15:23:50,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:23:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 8447 transitions. [2020-10-12 15:23:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 15:23:50,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:23:50,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:23:50,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:23:50,524 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:23:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:23:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash -211023258, now seen corresponding path program 1 times [2020-10-12 15:23:50,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:23:50,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322091314] [2020-10-12 15:23:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:23:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:23:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:51,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:51,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:23:51,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 15:23:51,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:23:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-12 15:23:51,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:23:51,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:23:51,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:23:51,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 15:23:51,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:23:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:23:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:23:51,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:51,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:23:51,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:23:51,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:23:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:23:51,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:23:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:23:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:23:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:23:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:23:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:23:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:23:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:23:52,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:23:52,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:23:52,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:23:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 15:23:52,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:23:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:23:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:23:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:23:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:23:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:23:52,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322091314] [2020-10-12 15:23:52,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:23:52,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:23:52,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039014825] [2020-10-12 15:23:52,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:23:52,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:23:52,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:23:52,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:23:52,373 INFO L87 Difference]: Start difference. First operand 6103 states and 8447 transitions. Second operand 7 states. [2020-10-12 15:24:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:24:41,042 INFO L93 Difference]: Finished difference Result 18345 states and 25675 transitions. [2020-10-12 15:24:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:24:41,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-12 15:24:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:24:41,099 INFO L225 Difference]: With dead ends: 18345 [2020-10-12 15:24:41,099 INFO L226 Difference]: Without dead ends: 12248 [2020-10-12 15:24:41,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:24:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12248 states. [2020-10-12 15:24:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12248 to 12077. [2020-10-12 15:24:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12077 states. [2020-10-12 15:24:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12077 states to 12077 states and 15478 transitions. [2020-10-12 15:24:41,409 INFO L78 Accepts]: Start accepts. Automaton has 12077 states and 15478 transitions. Word has length 111 [2020-10-12 15:24:41,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:24:41,412 INFO L479 AbstractCegarLoop]: Abstraction has 12077 states and 15478 transitions. [2020-10-12 15:24:41,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:24:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12077 states and 15478 transitions. [2020-10-12 15:24:41,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 15:24:41,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:24:41,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:24:41,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:24:41,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:24:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:24:41,422 INFO L82 PathProgramCache]: Analyzing trace with hash 100518583, now seen corresponding path program 1 times [2020-10-12 15:24:41,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:24:41,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199663710] [2020-10-12 15:24:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:24:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:42,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:42,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:42,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 15:24:42,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:24:42,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-12 15:24:42,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:24:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:24:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 15:24:42,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:24:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:24:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:42,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:42,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:24:42,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:24:42,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:24:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:24:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:24:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:24:42,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:24:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:43,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:24:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 15:24:43,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:24:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:24:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 15:24:43,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:24:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:24:43,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199663710] [2020-10-12 15:24:43,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:24:43,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:24:43,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483580188] [2020-10-12 15:24:43,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:24:43,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:24:43,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:24:43,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:24:43,384 INFO L87 Difference]: Start difference. First operand 12077 states and 15478 transitions. Second operand 7 states. [2020-10-12 15:25:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:25:33,790 INFO L93 Difference]: Finished difference Result 36927 states and 48551 transitions. [2020-10-12 15:25:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:25:33,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-12 15:25:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:25:33,885 INFO L225 Difference]: With dead ends: 36927 [2020-10-12 15:25:33,885 INFO L226 Difference]: Without dead ends: 24856 [2020-10-12 15:25:33,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:25:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24856 states. [2020-10-12 15:25:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24856 to 24403. [2020-10-12 15:25:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24403 states. [2020-10-12 15:25:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24403 states to 24403 states and 29673 transitions. [2020-10-12 15:25:34,408 INFO L78 Accepts]: Start accepts. Automaton has 24403 states and 29673 transitions. Word has length 139 [2020-10-12 15:25:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:25:34,410 INFO L479 AbstractCegarLoop]: Abstraction has 24403 states and 29673 transitions. [2020-10-12 15:25:34,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:25:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 24403 states and 29673 transitions. [2020-10-12 15:25:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-12 15:25:34,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:25:34,414 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:25:34,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:25:34,414 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:25:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:25:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1819935887, now seen corresponding path program 1 times [2020-10-12 15:25:34,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:25:34,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703047786] [2020-10-12 15:25:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:25:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:39,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:39,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 15:25:39,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:25:39,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 15:25:39,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:25:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:25:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-12 15:25:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:39,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:25:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:39,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:39,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:25:39,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:25:39,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:25:39,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:25:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:25:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:25:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:39,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:25:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:39,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:39,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 15:25:39,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:25:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-12 15:25:39,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:25:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:25:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 15:25:39,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:40,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 15:25:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:40,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:40,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:25:40,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:25:40,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 15:25:40,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:25:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:25:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:25:40,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:25:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 15:25:40,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703047786] [2020-10-12 15:25:40,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:25:40,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:25:40,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23611601] [2020-10-12 15:25:40,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:25:40,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:25:40,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:25:40,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:25:40,303 INFO L87 Difference]: Start difference. First operand 24403 states and 29673 transitions. Second operand 7 states.