/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:41:13,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:41:13,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:41:13,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:41:13,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:41:13,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:41:13,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:41:13,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:41:13,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:41:13,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:41:13,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:41:13,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:41:13,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:41:13,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:41:13,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:41:13,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:41:13,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:41:13,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:41:13,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:41:13,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:41:13,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:41:13,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:41:13,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:41:13,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:41:13,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:41:13,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:41:13,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:41:13,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:41:13,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:41:13,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:41:13,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:41:13,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:41:13,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:41:14,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:41:14,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:41:14,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:41:14,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:41:14,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:41:14,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:41:14,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:41:14,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:41:14,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:41:14,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:41:14,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:41:14,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:41:14,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:41:14,035 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:41:14,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:41:14,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:41:14,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:41:14,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:41:14,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:41:14,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:41:14,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:41:14,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:41:14,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:41:14,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:41:14,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:41:14,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:41:14,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:41:14,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:41:14,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:41:14,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:41:14,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:41:14,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:41:14,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:41:14,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:41:14,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:41:14,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:41:14,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:41:14,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:41:14,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:41:14,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:41:14,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:41:14,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:41:14,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:41:14,493 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:41:14,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-14 04:41:14,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76095d384/e3cdb57cd50747ffb9fc1b924027b26c/FLAGe7d3adf4d [2020-10-14 04:41:15,652 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:41:15,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label56.c [2020-10-14 04:41:15,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76095d384/e3cdb57cd50747ffb9fc1b924027b26c/FLAGe7d3adf4d [2020-10-14 04:41:15,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76095d384/e3cdb57cd50747ffb9fc1b924027b26c [2020-10-14 04:41:15,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:41:15,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:41:15,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:41:15,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:41:15,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:41:16,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:41:15" (1/1) ... [2020-10-14 04:41:16,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:16, skipping insertion in model container [2020-10-14 04:41:16,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:41:15" (1/1) ... [2020-10-14 04:41:16,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:41:16,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:41:18,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:41:18,653 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:41:19,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:41:20,038 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:41:20,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20 WrapperNode [2020-10-14 04:41:20,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:41:20,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:41:20,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:41:20,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:41:20,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... [2020-10-14 04:41:20,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... [2020-10-14 04:41:20,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... [2020-10-14 04:41:20,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... [2020-10-14 04:41:20,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... [2020-10-14 04:41:20,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... [2020-10-14 04:41:20,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... [2020-10-14 04:41:20,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:41:20,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:41:20,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:41:20,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:41:20,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:41:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:41:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:41:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:41:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:41:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:41:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:41:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:41:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:41:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:41:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:41:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:41:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:41:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:41:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:41:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:41:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:41:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:41:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:41:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:41:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:41:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:41:36,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:41:36,936 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:41:36,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:41:36 BoogieIcfgContainer [2020-10-14 04:41:36,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:41:36,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:41:36,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:41:36,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:41:36,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:41:15" (1/3) ... [2020-10-14 04:41:36,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2f11c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:41:36, skipping insertion in model container [2020-10-14 04:41:36,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:20" (2/3) ... [2020-10-14 04:41:36,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2f11c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:41:36, skipping insertion in model container [2020-10-14 04:41:36,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:41:36" (3/3) ... [2020-10-14 04:41:36,988 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label56.c [2020-10-14 04:41:37,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:41:37,023 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:41:37,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:41:37,080 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:41:37,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:41:37,081 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:41:37,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:41:37,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:41:37,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:41:37,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:41:37,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:41:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:41:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 04:41:37,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:37,159 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] [2020-10-14 04:41:37,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:37,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1696606132, now seen corresponding path program 1 times [2020-10-14 04:41:37,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:37,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874699891] [2020-10-14 04:41:37,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:37,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:38,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:38,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 04:41:38,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:38,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-14 04:41:38,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:38,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:41:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:41:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 04:41:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 04:41:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:38,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:38,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:38,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:41:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:38,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:38,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874699891] [2020-10-14 04:41:38,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:41:38,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:41:38,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147688109] [2020-10-14 04:41:38,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:41:38,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:38,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:41:38,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:41:38,297 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:42:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:10,612 INFO L93 Difference]: Finished difference Result 5076 states and 9543 transitions. [2020-10-14 04:42:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:42:10,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 04:42:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:10,663 INFO L225 Difference]: With dead ends: 5076 [2020-10-14 04:42:10,664 INFO L226 Difference]: Without dead ends: 3219 [2020-10-14 04:42:10,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:10,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-14 04:42:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3194. [2020-10-14 04:42:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-10-14 04:42:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5073 transitions. [2020-10-14 04:42:10,886 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5073 transitions. Word has length 57 [2020-10-14 04:42:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:10,887 INFO L479 AbstractCegarLoop]: Abstraction has 3194 states and 5073 transitions. [2020-10-14 04:42:10,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:42:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5073 transitions. [2020-10-14 04:42:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 04:42:10,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:10,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:42:10,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:42:10,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:10,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:10,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1000428320, now seen corresponding path program 1 times [2020-10-14 04:42:10,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:10,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865253106] [2020-10-14 04:42:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:12,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:42:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:42:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-14 04:42:12,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:12,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:42:12,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:42:12,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:42:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:12,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:12,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:42:12,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:12,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 04:42:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:12,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:12,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:42:12,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:12,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 04:42:12,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:12,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:12,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 04:42:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:42:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:12,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865253106] [2020-10-14 04:42:12,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:42:12,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:42:12,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017753838] [2020-10-14 04:42:12,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:12,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:12,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:12,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:12,678 INFO L87 Difference]: Start difference. First operand 3194 states and 5073 transitions. Second operand 5 states. [2020-10-14 04:42:43,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:43,594 INFO L93 Difference]: Finished difference Result 9336 states and 14967 transitions. [2020-10-14 04:42:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:42:43,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 04:42:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:43,642 INFO L225 Difference]: With dead ends: 9336 [2020-10-14 04:42:43,642 INFO L226 Difference]: Without dead ends: 6148 [2020-10-14 04:42:43,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:42:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2020-10-14 04:42:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 6077. [2020-10-14 04:42:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6077 states. [2020-10-14 04:42:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 9113 transitions. [2020-10-14 04:42:43,883 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 9113 transitions. Word has length 128 [2020-10-14 04:42:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:43,886 INFO L479 AbstractCegarLoop]: Abstraction has 6077 states and 9113 transitions. [2020-10-14 04:42:43,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:42:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 9113 transitions. [2020-10-14 04:42:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 04:42:43,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:43,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:42:43,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:42:43,903 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:43,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1725373406, now seen corresponding path program 1 times [2020-10-14 04:42:43,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:43,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890046108] [2020-10-14 04:42:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:44,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 04:42:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:42:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-14 04:42:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:44,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:42:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:42:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:42:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:44,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:44,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:44,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:44,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:44,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:42:44,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:44,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:44,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:44,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:45,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:42:45,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:45,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 04:42:45,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:45,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:42:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:45,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890046108] [2020-10-14 04:42:45,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:42:45,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:42:45,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498816570] [2020-10-14 04:42:45,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:45,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:45,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:45,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:45,114 INFO L87 Difference]: Start difference. First operand 6077 states and 9113 transitions. Second operand 5 states. [2020-10-14 04:43:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:30,224 INFO L93 Difference]: Finished difference Result 15050 states and 23056 transitions. [2020-10-14 04:43:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:43:30,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 04:43:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:30,262 INFO L225 Difference]: With dead ends: 15050 [2020-10-14 04:43:30,262 INFO L226 Difference]: Without dead ends: 8979 [2020-10-14 04:43:30,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:43:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2020-10-14 04:43:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8920. [2020-10-14 04:43:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8920 states. [2020-10-14 04:43:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 12744 transitions. [2020-10-14 04:43:30,473 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 12744 transitions. Word has length 138 [2020-10-14 04:43:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:30,474 INFO L479 AbstractCegarLoop]: Abstraction has 8920 states and 12744 transitions. [2020-10-14 04:43:30,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:43:30,475 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 12744 transitions. [2020-10-14 04:43:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 04:43:30,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:30,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:30,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:43:30,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1905006968, now seen corresponding path program 1 times [2020-10-14 04:43:30,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:30,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377919529] [2020-10-14 04:43:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:32,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:32,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 04:43:32,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:43:32,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-14 04:43:32,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:32,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:43:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:43:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:43:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:32,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:32,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:32,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:43:32,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:43:32,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:32,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:32,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:43:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:32,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:32,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:43:32,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:43:32,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:32,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:43:32,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:32,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377919529] [2020-10-14 04:43:32,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:32,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:43:32,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798626617] [2020-10-14 04:43:32,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:43:32,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:32,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:43:32,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:43:32,436 INFO L87 Difference]: Start difference. First operand 8920 states and 12744 transitions. Second operand 5 states. [2020-10-14 04:44:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:44:16,067 INFO L93 Difference]: Finished difference Result 26295 states and 38187 transitions. [2020-10-14 04:44:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:44:16,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 04:44:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:44:16,127 INFO L225 Difference]: With dead ends: 26295 [2020-10-14 04:44:16,127 INFO L226 Difference]: Without dead ends: 17381 [2020-10-14 04:44:16,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:44:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17381 states. [2020-10-14 04:44:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17381 to 17371. [2020-10-14 04:44:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17371 states. [2020-10-14 04:44:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17371 states to 17371 states and 22440 transitions. [2020-10-14 04:44:16,542 INFO L78 Accepts]: Start accepts. Automaton has 17371 states and 22440 transitions. Word has length 158 [2020-10-14 04:44:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:44:16,544 INFO L479 AbstractCegarLoop]: Abstraction has 17371 states and 22440 transitions. [2020-10-14 04:44:16,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:44:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 17371 states and 22440 transitions. [2020-10-14 04:44:16,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 04:44:16,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:44:16,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:44:16,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:44:16,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:44:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:44:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1376111720, now seen corresponding path program 1 times [2020-10-14 04:44:16,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:44:16,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039626281] [2020-10-14 04:44:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:44:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 04:44:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:44:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-10-14 04:44:17,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:17,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:44:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 04:44:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:44:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:17,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:44:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:17,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:17,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:44:17,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:44:17,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:17,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:44:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:44:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:18,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:44:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 04:44:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 04:44:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:18,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:44:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:44:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:44:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:44:18,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039626281] [2020-10-14 04:44:18,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:44:18,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:44:18,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529879332] [2020-10-14 04:44:18,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:44:18,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:44:18,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:44:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:44:18,244 INFO L87 Difference]: Start difference. First operand 17371 states and 22440 transitions. Second operand 6 states.