/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:14,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:14,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:14,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:14,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:14,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:14,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:14,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:14,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:14,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:14,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:14,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:14,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:14,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:14,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:14,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:14,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:14,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:14,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:14,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:14,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:14,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:14,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:14,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:14,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:14,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:14,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:14,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:14,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:14,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:14,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:14,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:14,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:14,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:14,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:14,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:14,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:14,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:14,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:14,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:14,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:14,926 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 [2020-09-25 05:38:14,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:14,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:14,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:14,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:14,952 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:14,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:14,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:14,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:14,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:14,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:14,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:14,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:14,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:14,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:14,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:14,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:14,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:14,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:14,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:14,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:14,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:14,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:14,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:14,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:14,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:14,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:14,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:14,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:14,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:14,957 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 05:38:15,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:15,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:15,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:15,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:15,434 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:15,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 05:38:15,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37745ed8f/1face210d46849d599fa43e5198215aa/FLAG7a74bc483 [2020-09-25 05:38:16,143 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:16,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 05:38:16,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37745ed8f/1face210d46849d599fa43e5198215aa/FLAG7a74bc483 [2020-09-25 05:38:16,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37745ed8f/1face210d46849d599fa43e5198215aa [2020-09-25 05:38:16,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:16,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:16,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:16,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:16,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:16,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:16" (1/1) ... [2020-09-25 05:38:16,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:16, skipping insertion in model container [2020-09-25 05:38:16,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:16" (1/1) ... [2020-09-25 05:38:16,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:16,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:17,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:17,058 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:17,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:17,288 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:17,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17 WrapperNode [2020-09-25 05:38:17,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:17,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:17,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:17,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:17,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (1/1) ... [2020-09-25 05:38:17,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (1/1) ... [2020-09-25 05:38:17,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (1/1) ... [2020-09-25 05:38:17,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (1/1) ... [2020-09-25 05:38:17,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (1/1) ... [2020-09-25 05:38:17,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (1/1) ... [2020-09-25 05:38:17,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (1/1) ... [2020-09-25 05:38:17,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:17,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:17,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:17,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:17,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (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 [2020-09-25 05:38:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:18,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:18,975 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:18,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:18 BoogieIcfgContainer [2020-09-25 05:38:18,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:18,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:18,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:18,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:16" (1/3) ... [2020-09-25 05:38:18,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e1548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:18, skipping insertion in model container [2020-09-25 05:38:18,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:17" (2/3) ... [2020-09-25 05:38:18,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e1548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:18, skipping insertion in model container [2020-09-25 05:38:18,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:18" (3/3) ... [2020-09-25 05:38:18,996 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2020-09-25 05:38:19,009 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:19,021 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:19,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:19,080 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:19,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:19,081 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:19,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:19,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:19,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:19,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:19,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 05:38:19,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:19,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:19,128 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times [2020-09-25 05:38:19,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:19,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945193443] [2020-09-25 05:38:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:20,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:20,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:38:20,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-09-25 05:38:20,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:20,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 05:38:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:38:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:20,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:20,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:20,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:38:20,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:20,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:21,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945193443] [2020-09-25 05:38:21,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:21,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:38:21,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291796465] [2020-09-25 05:38:21,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:21,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:21,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:21,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:21,067 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 05:38:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:24,374 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 05:38:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:38:24,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-09-25 05:38:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:24,405 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 05:38:24,406 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 05:38:24,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 05:38:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 05:38:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 05:38:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 05:38:24,543 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 74 [2020-09-25 05:38:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:24,544 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 05:38:24,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 05:38:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 05:38:24,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:24,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:24,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:24,555 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash 607028325, now seen corresponding path program 1 times [2020-09-25 05:38:24,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:24,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584275404] [2020-09-25 05:38:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:38:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:38:29,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:38:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:38:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:29,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:29,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:29,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:38:29,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:29,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 05:38:29,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:38:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:29,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584275404] [2020-09-25 05:38:29,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:29,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:29,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389343796] [2020-09-25 05:38:29,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:29,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:29,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:29,982 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 5 states. [2020-09-25 05:38:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:31,796 INFO L93 Difference]: Finished difference Result 1742 states and 2233 transitions. [2020-09-25 05:38:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:31,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 05:38:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:31,815 INFO L225 Difference]: With dead ends: 1742 [2020-09-25 05:38:31,815 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 05:38:31,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 05:38:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2020-09-25 05:38:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-09-25 05:38:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1292 transitions. [2020-09-25 05:38:31,906 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1292 transitions. Word has length 157 [2020-09-25 05:38:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:31,910 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1292 transitions. [2020-09-25 05:38:31,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1292 transitions. [2020-09-25 05:38:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 05:38:31,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:31,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:31,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:31,929 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:31,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1359580747, now seen corresponding path program 1 times [2020-09-25 05:38:31,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:31,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084294274] [2020-09-25 05:38:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:37,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 05:38:37,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:37,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:37,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:37,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:38:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:38:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:38:37,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:37,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:37,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:37,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:37,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 05:38:37,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:37,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:38:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:37,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084294274] [2020-09-25 05:38:37,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:37,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:37,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222839441] [2020-09-25 05:38:37,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:37,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:37,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:37,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:37,367 INFO L87 Difference]: Start difference. First operand 1030 states and 1292 transitions. Second operand 6 states. [2020-09-25 05:38:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:40,363 INFO L93 Difference]: Finished difference Result 2880 states and 3810 transitions. [2020-09-25 05:38:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:40,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 05:38:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:40,381 INFO L225 Difference]: With dead ends: 2880 [2020-09-25 05:38:40,382 INFO L226 Difference]: Without dead ends: 2015 [2020-09-25 05:38:40,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:40,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2020-09-25 05:38:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1958. [2020-09-25 05:38:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-09-25 05:38:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2580 transitions. [2020-09-25 05:38:40,478 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2580 transitions. Word has length 163 [2020-09-25 05:38:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:40,480 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2580 transitions. [2020-09-25 05:38:40,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2580 transitions. [2020-09-25 05:38:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:38:40,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:40,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:40,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:40,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1151994247, now seen corresponding path program 1 times [2020-09-25 05:38:40,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:40,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098914805] [2020-09-25 05:38:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 05:38:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:38:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 05:38:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:38:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:45,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:45,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:38:45,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:38:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:38:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:45,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098914805] [2020-09-25 05:38:45,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:45,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:45,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789224837] [2020-09-25 05:38:45,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:45,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:45,798 INFO L87 Difference]: Start difference. First operand 1958 states and 2580 transitions. Second operand 5 states. [2020-09-25 05:38:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:47,896 INFO L93 Difference]: Finished difference Result 5131 states and 7016 transitions. [2020-09-25 05:38:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:47,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 05:38:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:47,924 INFO L225 Difference]: With dead ends: 5131 [2020-09-25 05:38:47,924 INFO L226 Difference]: Without dead ends: 3338 [2020-09-25 05:38:47,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-09-25 05:38:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2426. [2020-09-25 05:38:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2020-09-25 05:38:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3143 transitions. [2020-09-25 05:38:48,052 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3143 transitions. Word has length 182 [2020-09-25 05:38:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:48,052 INFO L479 AbstractCegarLoop]: Abstraction has 2426 states and 3143 transitions. [2020-09-25 05:38:48,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3143 transitions. [2020-09-25 05:38:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 05:38:48,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:48,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:48,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:48,058 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:48,059 INFO L82 PathProgramCache]: Analyzing trace with hash -417207977, now seen corresponding path program 1 times [2020-09-25 05:38:48,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:48,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888579634] [2020-09-25 05:38:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:53,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 05:38:53,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:53,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:53,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 05:38:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:38:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:53,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:53,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:53,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:53,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:53,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 05:38:53,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 05:38:53,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:53,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:38:53,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:53,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888579634] [2020-09-25 05:38:53,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:53,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:53,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403299400] [2020-09-25 05:38:53,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:53,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:53,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:53,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:53,511 INFO L87 Difference]: Start difference. First operand 2426 states and 3143 transitions. Second operand 5 states. [2020-09-25 05:38:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:55,888 INFO L93 Difference]: Finished difference Result 5467 states and 7164 transitions. [2020-09-25 05:38:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:55,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-25 05:38:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:55,906 INFO L225 Difference]: With dead ends: 5467 [2020-09-25 05:38:55,907 INFO L226 Difference]: Without dead ends: 3206 [2020-09-25 05:38:55,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2020-09-25 05:38:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3187. [2020-09-25 05:38:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3187 states. [2020-09-25 05:38:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4102 transitions. [2020-09-25 05:38:56,037 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4102 transitions. Word has length 196 [2020-09-25 05:38:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:56,037 INFO L479 AbstractCegarLoop]: Abstraction has 3187 states and 4102 transitions. [2020-09-25 05:38:56,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:56,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4102 transitions. [2020-09-25 05:38:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 05:38:56,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:56,047 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:56,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:56,048 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1982165903, now seen corresponding path program 1 times [2020-09-25 05:38:56,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:56,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975934749] [2020-09-25 05:38:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:56,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:01,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 05:39:01,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:39:01,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:01,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-25 05:39:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 05:39:01,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:01,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:01,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:01,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:01,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:01,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:39:01,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:01,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 05:39:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:39:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:01,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:39:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:01,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 05:39:01,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:01,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 05:39:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:01,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975934749] [2020-09-25 05:39:01,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:01,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:39:01,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412513745] [2020-09-25 05:39:01,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:39:01,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:01,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:39:01,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:01,757 INFO L87 Difference]: Start difference. First operand 3187 states and 4102 transitions. Second operand 8 states.