/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:34:13,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:34:13,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:34:13,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:34:13,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:34:13,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:34:13,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:34:13,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:34:13,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:34:13,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:34:13,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:34:13,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:34:13,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:34:13,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:34:13,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:34:13,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:34:13,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:34:13,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:34:13,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:34:13,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:34:13,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:34:13,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:34:13,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:34:13,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:34:13,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:34:13,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:34:13,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:34:13,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:34:13,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:34:13,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:34:13,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:34:13,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:34:13,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:34:13,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:34:13,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:34:13,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:34:13,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:34:13,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:34:13,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:34:13,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:34:13,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:34:13,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:34:13,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:34:13,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:34:13,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:34:13,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:34:13,372 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:34:13,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:34:13,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:34:13,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:34:13,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:34:13,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:34:13,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:34:13,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:34:13,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:34:13,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:34:13,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:34:13,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:34:13,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:34:13,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:34:13,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:34:13,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:34:13,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:34:13,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:13,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:34:13,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:34:13,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:34:13,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:34:13,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:34:13,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:34:13,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:34:13,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:34:13,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:34:13,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:34:13,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:34:13,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:34:13,680 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:34:13,681 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2020-10-12 15:34:13,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa983cc4a/35d8108c48cb4564b60c06ee7d90ace6/FLAGa9a659a1d [2020-10-12 15:34:14,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:34:14,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2020-10-12 15:34:14,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa983cc4a/35d8108c48cb4564b60c06ee7d90ace6/FLAGa9a659a1d [2020-10-12 15:34:14,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa983cc4a/35d8108c48cb4564b60c06ee7d90ace6 [2020-10-12 15:34:14,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:14,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:14,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:14,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:14,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:14,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:14" (1/1) ... [2020-10-12 15:34:14,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1516d3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:14, skipping insertion in model container [2020-10-12 15:34:14,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:14" (1/1) ... [2020-10-12 15:34:14,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:14,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:15,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:15,269 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:15,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:15,403 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:15,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15 WrapperNode [2020-10-12 15:34:15,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:15,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:15,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:15,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:15,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... [2020-10-12 15:34:15,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:15,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:15,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:15,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:15,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:34:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:34:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:34:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:34:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:34:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:34:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:34:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:34:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:34:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:34:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:34:15,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:34:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:34:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:34:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:34:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:34:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:34:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:34:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:34:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:34:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:34:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:34:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:34:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:34:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:34:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:34:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:34:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:34:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:34:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:34:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:34:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:34:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:34:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:34:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:34:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:34:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:34:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:34:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:34:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:34:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:34:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:34:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:34:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:34:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:34:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:34:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:34:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:34:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:34:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:34:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:34:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:34:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:34:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:34:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:34:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:34:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:34:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:34:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:34:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:34:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:34:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:34:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:34:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:34:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:34:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:34:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:34:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:34:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:34:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:34:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:34:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:34:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:34:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:34:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:34:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:34:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:34:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:34:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:34:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:34:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:34:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:34:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:34:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:34:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:34:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:34:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:34:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:34:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:34:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:34:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:34:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:34:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:34:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:34:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:34:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:34:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:34:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:34:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:34:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:34:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:34:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:34:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:34:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:34:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:34:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:34:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:34:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:34:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:34:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:34:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:16,198 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:16,198 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-12 15:34:16,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:16 BoogieIcfgContainer [2020-10-12 15:34:16,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:16,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:16,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:16,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:16,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:14" (1/3) ... [2020-10-12 15:34:16,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583d4062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:16, skipping insertion in model container [2020-10-12 15:34:16,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:15" (2/3) ... [2020-10-12 15:34:16,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583d4062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:16, skipping insertion in model container [2020-10-12 15:34:16,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:16" (3/3) ... [2020-10-12 15:34:16,212 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2020-10-12 15:34:16,224 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:16,232 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-12 15:34:16,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-12 15:34:16,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:16,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:16,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:16,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:16,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:16,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:16,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:16,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-12 15:34:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:34:16,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:16,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:16,329 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:16,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:16,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-10-12 15:34:16,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:16,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257595240] [2020-10-12 15:34:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:34:16,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-12 15:34:16,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:34:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:16,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:34:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:17,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257595240] [2020-10-12 15:34:17,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:17,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:17,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290610696] [2020-10-12 15:34:17,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:17,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:17,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:17,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:17,034 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 5 states. [2020-10-12 15:34:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,298 INFO L93 Difference]: Finished difference Result 104 states and 170 transitions. [2020-10-12 15:34:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:17,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 15:34:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,311 INFO L225 Difference]: With dead ends: 104 [2020-10-12 15:34:17,311 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 15:34:17,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 15:34:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-12 15:34:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 15:34:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-12 15:34:17,362 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 10 [2020-10-12 15:34:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,363 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-12 15:34:17,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-12 15:34:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 15:34:17,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:17,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:17,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-10-12 15:34:17,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724982967] [2020-10-12 15:34:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:34:17,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 15:34:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:34:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:34:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:17,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:17,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:17,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:17,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:34:17,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:34:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:17,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724982967] [2020-10-12 15:34:17,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:17,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:17,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651141019] [2020-10-12 15:34:17,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:17,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:17,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:17,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:17,675 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2020-10-12 15:34:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:17,858 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-12 15:34:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:17,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-12 15:34:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:17,861 INFO L225 Difference]: With dead ends: 43 [2020-10-12 15:34:17,861 INFO L226 Difference]: Without dead ends: 41 [2020-10-12 15:34:17,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-12 15:34:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-12 15:34:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 15:34:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-12 15:34:17,879 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-10-12 15:34:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:17,880 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-12 15:34:17,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-12 15:34:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:34:17,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:17,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:17,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:34:17,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:17,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:17,887 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-10-12 15:34:17,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:17,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72644306] [2020-10-12 15:34:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:34:18,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 15:34:18,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:18,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:34:18,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:18,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:34:18,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:18,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72644306] [2020-10-12 15:34:18,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:18,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:18,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101263047] [2020-10-12 15:34:18,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:18,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:18,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:18,163 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2020-10-12 15:34:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,395 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-12 15:34:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:18,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-12 15:34:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,397 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:34:18,397 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:34:18,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:34:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-10-12 15:34:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:34:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-12 15:34:18,406 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-10-12 15:34:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,407 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-12 15:34:18,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-12 15:34:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 15:34:18,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:18,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:34:18,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-10-12 15:34:18,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290189726] [2020-10-12 15:34:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:34:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 15:34:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:34:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:34:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:18,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:18,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:18,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:18,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:18,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290189726] [2020-10-12 15:34:18,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:18,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:18,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669888200] [2020-10-12 15:34:18,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:18,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:18,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:18,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:18,629 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-10-12 15:34:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:18,837 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-12 15:34:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:18,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-12 15:34:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:18,839 INFO L225 Difference]: With dead ends: 48 [2020-10-12 15:34:18,839 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 15:34:18,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 15:34:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-12 15:34:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:34:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-12 15:34:18,846 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-10-12 15:34:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:18,847 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-12 15:34:18,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-12 15:34:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 15:34:18,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:18,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:18,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:34:18,849 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-10-12 15:34:18,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:18,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511329474] [2020-10-12 15:34:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:18,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:34:19,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 15:34:19,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:19,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:19,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:19,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:19,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511329474] [2020-10-12 15:34:19,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:19,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:19,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258089608] [2020-10-12 15:34:19,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:19,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:19,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:19,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:19,162 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-10-12 15:34:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:19,326 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-12 15:34:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:19,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-12 15:34:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:19,328 INFO L225 Difference]: With dead ends: 46 [2020-10-12 15:34:19,329 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 15:34:19,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:19,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 15:34:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-12 15:34:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-12 15:34:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-12 15:34:19,348 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-10-12 15:34:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:19,348 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-12 15:34:19,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-12 15:34:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:34:19,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:19,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:19,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:34:19,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:19,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-10-12 15:34:19,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:19,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321525036] [2020-10-12 15:34:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 15:34:19,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 15:34:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:19,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:19,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:19,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:19,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:19,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:19,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321525036] [2020-10-12 15:34:19,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:19,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:19,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663061746] [2020-10-12 15:34:19,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:19,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:19,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:19,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:19,776 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2020-10-12 15:34:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:20,036 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-10-12 15:34:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:20,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-12 15:34:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:20,038 INFO L225 Difference]: With dead ends: 72 [2020-10-12 15:34:20,038 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 15:34:20,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 15:34:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2020-10-12 15:34:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 15:34:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 15:34:20,056 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 18 [2020-10-12 15:34:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:20,057 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 15:34:20,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 15:34:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:34:20,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:20,060 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:20,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:34:20,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:20,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:20,062 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-10-12 15:34:20,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:20,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400190627] [2020-10-12 15:34:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:34:20,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-12 15:34:20,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:34:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:20,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:20,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400190627] [2020-10-12 15:34:20,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:20,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:20,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999226579] [2020-10-12 15:34:20,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:20,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:20,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:20,463 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states. [2020-10-12 15:34:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:20,801 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-12 15:34:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:20,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-12 15:34:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:20,802 INFO L225 Difference]: With dead ends: 75 [2020-10-12 15:34:20,803 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 15:34:20,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 15:34:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2020-10-12 15:34:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 15:34:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-12 15:34:20,814 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 21 [2020-10-12 15:34:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:20,815 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-12 15:34:20,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-12 15:34:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:20,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:20,817 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:20,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:34:20,818 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1381308545, now seen corresponding path program 2 times [2020-10-12 15:34:20,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:20,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766986452] [2020-10-12 15:34:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:20,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 15:34:20,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:34:20,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:20,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:20,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:20,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:20,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:34:20,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766986452] [2020-10-12 15:34:20,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:20,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:34:20,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598484927] [2020-10-12 15:34:20,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:20,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:20,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:20,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:20,996 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 6 states. [2020-10-12 15:34:21,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:21,216 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-12 15:34:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:21,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-12 15:34:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:21,217 INFO L225 Difference]: With dead ends: 63 [2020-10-12 15:34:21,217 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 15:34:21,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 15:34:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-12 15:34:21,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 15:34:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-12 15:34:21,225 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2020-10-12 15:34:21,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:21,226 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-12 15:34:21,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-12 15:34:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:21,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:21,229 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:21,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:34:21,230 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:21,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-10-12 15:34:21,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:21,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807665299] [2020-10-12 15:34:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:21,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-12 15:34:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:34:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:21,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:21,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:21,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:21,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:21,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:21,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:21,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807665299] [2020-10-12 15:34:21,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:21,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:21,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978377640] [2020-10-12 15:34:21,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:21,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:21,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:21,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:21,756 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 8 states. [2020-10-12 15:34:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:22,079 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-10-12 15:34:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:22,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-12 15:34:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:22,081 INFO L225 Difference]: With dead ends: 42 [2020-10-12 15:34:22,081 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 15:34:22,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 15:34:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-12 15:34:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 15:34:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-12 15:34:22,086 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2020-10-12 15:34:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:22,086 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-12 15:34:22,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-12 15:34:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:34:22,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:22,088 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:34:22,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:34:22,088 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:22,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash 473692249, now seen corresponding path program 1 times [2020-10-12 15:34:22,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:22,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053063179] [2020-10-12 15:34:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:34:22,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-12 15:34:22,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:34:22,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:22,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:22,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:22,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:22,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:22,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:23,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053063179] [2020-10-12 15:34:23,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:23,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:23,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777961217] [2020-10-12 15:34:23,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:23,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:23,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:23,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:23,005 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 8 states. [2020-10-12 15:34:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:23,424 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-10-12 15:34:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:23,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-12 15:34:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:23,425 INFO L225 Difference]: With dead ends: 64 [2020-10-12 15:34:23,426 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 15:34:23,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 15:34:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 40. [2020-10-12 15:34:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 15:34:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-12 15:34:23,437 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 29 [2020-10-12 15:34:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:23,442 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-12 15:34:23,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-12 15:34:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:23,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:23,443 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:34:23,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:34:23,443 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:23,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:23,444 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-10-12 15:34:23,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:23,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109825042] [2020-10-12 15:34:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:23,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-12 15:34:23,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:34:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:23,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:23,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:23,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:23,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:23,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:23,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109825042] [2020-10-12 15:34:23,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:23,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:23,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240862963] [2020-10-12 15:34:23,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:23,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:23,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:23,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:23,998 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2020-10-12 15:34:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:24,850 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2020-10-12 15:34:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:24,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-12 15:34:24,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:24,855 INFO L225 Difference]: With dead ends: 135 [2020-10-12 15:34:24,855 INFO L226 Difference]: Without dead ends: 133 [2020-10-12 15:34:24,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:34:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-12 15:34:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 60. [2020-10-12 15:34:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-12 15:34:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-12 15:34:24,868 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 32 [2020-10-12 15:34:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:24,869 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-12 15:34:24,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-12 15:34:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:24,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:24,870 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:34:24,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:34:24,871 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1492699980, now seen corresponding path program 1 times [2020-10-12 15:34:24,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:24,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467466927] [2020-10-12 15:34:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:24,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:24,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:25,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-12 15:34:25,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:34:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:34:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:25,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467466927] [2020-10-12 15:34:25,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:25,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:34:25,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568310397] [2020-10-12 15:34:25,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:34:25,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:25,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:34:25,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:25,773 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 8 states. [2020-10-12 15:34:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:26,236 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-12 15:34:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:26,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-12 15:34:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:26,238 INFO L225 Difference]: With dead ends: 119 [2020-10-12 15:34:26,238 INFO L226 Difference]: Without dead ends: 106 [2020-10-12 15:34:26,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-12 15:34:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2020-10-12 15:34:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 15:34:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-12 15:34:26,252 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 32 [2020-10-12 15:34:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:26,252 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-12 15:34:26,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:34:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-12 15:34:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:34:26,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:26,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:34:26,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:34:26,257 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash -243600310, now seen corresponding path program 1 times [2020-10-12 15:34:26,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:26,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735194828] [2020-10-12 15:34:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:34:26,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 15:34:26,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:34:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:26,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:26,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:26,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:26,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:26,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735194828] [2020-10-12 15:34:26,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:26,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:26,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858481480] [2020-10-12 15:34:26,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:26,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:26,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:26,775 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 9 states. [2020-10-12 15:34:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:27,363 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-10-12 15:34:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:27,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-12 15:34:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:27,368 INFO L225 Difference]: With dead ends: 125 [2020-10-12 15:34:27,368 INFO L226 Difference]: Without dead ends: 113 [2020-10-12 15:34:27,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-12 15:34:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 98. [2020-10-12 15:34:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:34:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2020-10-12 15:34:27,382 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 32 [2020-10-12 15:34:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:27,382 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2020-10-12 15:34:27,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2020-10-12 15:34:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:27,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:27,383 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 15:34:27,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:34:27,384 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:27,384 INFO L82 PathProgramCache]: Analyzing trace with hash 145286649, now seen corresponding path program 2 times [2020-10-12 15:34:27,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:27,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009733488] [2020-10-12 15:34:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:28,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-12 15:34:28,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:34:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:28,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:28,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:28,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:28,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009733488] [2020-10-12 15:34:28,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:28,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:28,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789024821] [2020-10-12 15:34:28,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:28,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:28,420 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand 10 states. [2020-10-12 15:34:29,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:29,327 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-10-12 15:34:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:34:29,327 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-12 15:34:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:29,328 INFO L225 Difference]: With dead ends: 138 [2020-10-12 15:34:29,329 INFO L226 Difference]: Without dead ends: 126 [2020-10-12 15:34:29,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:34:29,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-12 15:34:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 100. [2020-10-12 15:34:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 15:34:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-12 15:34:29,341 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 35 [2020-10-12 15:34:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:29,341 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-12 15:34:29,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-12 15:34:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:29,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:29,342 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:34:29,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:34:29,343 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:29,343 INFO L82 PathProgramCache]: Analyzing trace with hash -969799515, now seen corresponding path program 1 times [2020-10-12 15:34:29,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:29,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877806052] [2020-10-12 15:34:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-12 15:34:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:34:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:29,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877806052] [2020-10-12 15:34:30,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:30,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:30,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997596252] [2020-10-12 15:34:30,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:30,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:30,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:30,027 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 10 states. [2020-10-12 15:34:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:30,882 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2020-10-12 15:34:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:30,884 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-12 15:34:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:30,885 INFO L225 Difference]: With dead ends: 126 [2020-10-12 15:34:30,885 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 15:34:30,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 15:34:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 104. [2020-10-12 15:34:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-12 15:34:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2020-10-12 15:34:30,900 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 35 [2020-10-12 15:34:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:30,901 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2020-10-12 15:34:30,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2020-10-12 15:34:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:30,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:30,902 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 15:34:30,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:34:30,903 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:30,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1777941385, now seen corresponding path program 2 times [2020-10-12 15:34:30,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:30,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646451614] [2020-10-12 15:34:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:31,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:31,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-12 15:34:31,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:31,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:31,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:34:31,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:31,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:31,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:31,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:31,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:34:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:31,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646451614] [2020-10-12 15:34:31,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:31,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:31,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941725039] [2020-10-12 15:34:31,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:31,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:31,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:31,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:31,314 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 10 states. [2020-10-12 15:34:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:31,877 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-10-12 15:34:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:31,877 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-12 15:34:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:31,878 INFO L225 Difference]: With dead ends: 135 [2020-10-12 15:34:31,878 INFO L226 Difference]: Without dead ends: 133 [2020-10-12 15:34:31,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:34:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-12 15:34:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-10-12 15:34:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 15:34:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2020-10-12 15:34:31,889 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 35 [2020-10-12 15:34:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:31,890 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2020-10-12 15:34:31,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2020-10-12 15:34:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:34:31,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:31,891 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-12 15:34:31,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:34:31,891 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:31,892 INFO L82 PathProgramCache]: Analyzing trace with hash 26656872, now seen corresponding path program 3 times [2020-10-12 15:34:31,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:31,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783688512] [2020-10-12 15:34:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:33,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:34:33,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-12 15:34:33,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:34:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:33,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:33,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:33,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:33,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:33,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783688512] [2020-10-12 15:34:33,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:33,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:33,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642867756] [2020-10-12 15:34:33,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:33,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:33,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:33,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:33,750 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand 11 states. [2020-10-12 15:34:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:34,940 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2020-10-12 15:34:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:34:34,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-12 15:34:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:34,942 INFO L225 Difference]: With dead ends: 139 [2020-10-12 15:34:34,943 INFO L226 Difference]: Without dead ends: 137 [2020-10-12 15:34:34,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:34:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-12 15:34:34,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 108. [2020-10-12 15:34:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 15:34:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2020-10-12 15:34:34,951 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 38 [2020-10-12 15:34:34,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:34,951 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2020-10-12 15:34:34,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:34,951 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2020-10-12 15:34:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:34:34,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:34,952 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-12 15:34:34,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:34:34,952 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:34,953 INFO L82 PathProgramCache]: Analyzing trace with hash 4024618, now seen corresponding path program 3 times [2020-10-12 15:34:34,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:34,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190644684] [2020-10-12 15:34:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:35,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:34:35,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 15:34:35,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:34:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:35,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:35,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:35,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:34:35,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190644684] [2020-10-12 15:34:35,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:35,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:35,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578666203] [2020-10-12 15:34:35,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:35,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:35,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:35,249 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand 9 states. [2020-10-12 15:34:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:35,715 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2020-10-12 15:34:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:35,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-12 15:34:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:35,717 INFO L225 Difference]: With dead ends: 127 [2020-10-12 15:34:35,717 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 15:34:35,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 15:34:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-12 15:34:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 15:34:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2020-10-12 15:34:35,728 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 38 [2020-10-12 15:34:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:35,728 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2020-10-12 15:34:35,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2020-10-12 15:34:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:34:35,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:35,729 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-10-12 15:34:35,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:34:35,729 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash 685054873, now seen corresponding path program 4 times [2020-10-12 15:34:35,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:35,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537094989] [2020-10-12 15:34:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:34:36,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-12 15:34:36,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:34:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:36,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:36,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:36,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:36,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:34:36,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537094989] [2020-10-12 15:34:36,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:36,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:36,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079220233] [2020-10-12 15:34:36,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:36,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:36,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:36,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:36,917 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand 10 states. [2020-10-12 15:34:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:37,594 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2020-10-12 15:34:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:37,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-12 15:34:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:37,596 INFO L225 Difference]: With dead ends: 115 [2020-10-12 15:34:37,596 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 15:34:37,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:34:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 15:34:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-12 15:34:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 15:34:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2020-10-12 15:34:37,603 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 41 [2020-10-12 15:34:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:37,603 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2020-10-12 15:34:37,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2020-10-12 15:34:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:34:37,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:37,604 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 15:34:37,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:34:37,604 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash -372709504, now seen corresponding path program 5 times [2020-10-12 15:34:37,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:37,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787338620] [2020-10-12 15:34:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:34:38,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-12 15:34:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:34:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:38,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:38,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787338620] [2020-10-12 15:34:38,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:38,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:38,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575387637] [2020-10-12 15:34:38,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:38,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:38,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:38,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:38,670 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 11 states. [2020-10-12 15:34:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:39,461 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2020-10-12 15:34:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:39,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-12 15:34:39,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:39,462 INFO L225 Difference]: With dead ends: 102 [2020-10-12 15:34:39,463 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 15:34:39,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 15:34:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 83. [2020-10-12 15:34:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 15:34:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-12 15:34:39,469 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 43 [2020-10-12 15:34:39,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:39,470 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-12 15:34:39,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-12 15:34:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:34:39,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:39,470 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 15:34:39,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:34:39,471 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1487795668, now seen corresponding path program 2 times [2020-10-12 15:34:39,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:39,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959670261] [2020-10-12 15:34:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:39,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:34:40,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-12 15:34:40,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:34:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:34:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:40,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:40,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:40,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:40,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:40,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959670261] [2020-10-12 15:34:40,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:40,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:34:40,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164841414] [2020-10-12 15:34:40,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:34:40,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:40,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:34:40,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:40,958 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 10 states. [2020-10-12 15:34:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:41,268 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2020-10-12 15:34:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:41,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-12 15:34:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:41,269 INFO L225 Difference]: With dead ends: 96 [2020-10-12 15:34:41,270 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 15:34:41,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 15:34:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2020-10-12 15:34:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 15:34:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-12 15:34:41,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 43 [2020-10-12 15:34:41,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:41,283 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-12 15:34:41,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:34:41,283 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-12 15:34:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:34:41,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:41,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 15:34:41,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:34:41,284 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:41,285 INFO L82 PathProgramCache]: Analyzing trace with hash 220757377, now seen corresponding path program 6 times [2020-10-12 15:34:41,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:41,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495856599] [2020-10-12 15:34:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:34:43,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2543 [2020-10-12 15:34:43,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:34:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:44,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:44,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:44,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:44,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495856599] [2020-10-12 15:34:44,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:44,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:44,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602733619] [2020-10-12 15:34:44,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:44,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:44,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:44,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:44,183 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 12 states. [2020-10-12 15:34:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:45,475 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2020-10-12 15:34:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:34:45,478 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-12 15:34:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:45,480 INFO L225 Difference]: With dead ends: 143 [2020-10-12 15:34:45,480 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 15:34:45,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:34:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 15:34:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 86. [2020-10-12 15:34:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 15:34:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-10-12 15:34:45,488 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 46 [2020-10-12 15:34:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:45,489 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-10-12 15:34:45,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-10-12 15:34:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:34:45,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:45,490 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 15:34:45,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:34:45,490 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:45,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash -894328787, now seen corresponding path program 2 times [2020-10-12 15:34:45,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:45,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801204171] [2020-10-12 15:34:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:46,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:46,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:34:46,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-12 15:34:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:34:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:46,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801204171] [2020-10-12 15:34:46,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:46,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:46,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261038683] [2020-10-12 15:34:46,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:46,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:46,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:46,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:46,586 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 12 states. [2020-10-12 15:34:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:47,723 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2020-10-12 15:34:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:34:47,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-12 15:34:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:47,725 INFO L225 Difference]: With dead ends: 144 [2020-10-12 15:34:47,725 INFO L226 Difference]: Without dead ends: 142 [2020-10-12 15:34:47,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:34:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-12 15:34:47,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 112. [2020-10-12 15:34:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 15:34:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-10-12 15:34:47,740 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 46 [2020-10-12 15:34:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:47,740 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-10-12 15:34:47,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-10-12 15:34:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:34:47,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:47,741 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 15:34:47,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:34:47,742 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash 135030511, now seen corresponding path program 1 times [2020-10-12 15:34:47,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:47,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451886423] [2020-10-12 15:34:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:47,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 15:34:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:48,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:48,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:48,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:48,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:48,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451886423] [2020-10-12 15:34:48,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:48,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:48,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087705868] [2020-10-12 15:34:48,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:48,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:48,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:48,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:48,631 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 11 states. [2020-10-12 15:34:49,470 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-12 15:34:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:49,871 INFO L93 Difference]: Finished difference Result 167 states and 185 transitions. [2020-10-12 15:34:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:34:49,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-12 15:34:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:49,873 INFO L225 Difference]: With dead ends: 167 [2020-10-12 15:34:49,873 INFO L226 Difference]: Without dead ends: 154 [2020-10-12 15:34:49,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:34:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-12 15:34:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 137. [2020-10-12 15:34:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 15:34:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-10-12 15:34:49,885 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 46 [2020-10-12 15:34:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:49,885 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-10-12 15:34:49,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-10-12 15:34:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:34:49,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:49,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 15:34:49,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:34:49,887 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash -673111359, now seen corresponding path program 4 times [2020-10-12 15:34:49,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:49,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231919469] [2020-10-12 15:34:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:50,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:34:50,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:50,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 15:34:50,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:34:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:50,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:50,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:50,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231919469] [2020-10-12 15:34:50,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:50,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:50,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851601790] [2020-10-12 15:34:50,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:50,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:50,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:50,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:50,554 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 11 states. [2020-10-12 15:34:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:51,802 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-10-12 15:34:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:51,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-12 15:34:51,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:51,804 INFO L225 Difference]: With dead ends: 176 [2020-10-12 15:34:51,804 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 15:34:51,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 15:34:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 140. [2020-10-12 15:34:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-12 15:34:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2020-10-12 15:34:51,829 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 46 [2020-10-12 15:34:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:51,831 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2020-10-12 15:34:51,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2020-10-12 15:34:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:34:51,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:51,832 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-10-12 15:34:51,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:34:51,833 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:51,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2107218912, now seen corresponding path program 7 times [2020-10-12 15:34:51,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:51,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387200717] [2020-10-12 15:34:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:53,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:34:53,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-10-12 15:34:53,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:53,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:53,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:53,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 15:34:53,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:53,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:53,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:53,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:53,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387200717] [2020-10-12 15:34:53,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:53,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:34:53,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686497448] [2020-10-12 15:34:53,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:34:53,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:53,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:34:53,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:53,683 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand 13 states. [2020-10-12 15:34:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:55,783 INFO L93 Difference]: Finished difference Result 286 states and 314 transitions. [2020-10-12 15:34:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:34:55,784 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-12 15:34:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:55,786 INFO L225 Difference]: With dead ends: 286 [2020-10-12 15:34:55,786 INFO L226 Difference]: Without dead ends: 284 [2020-10-12 15:34:55,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:34:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-12 15:34:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 186. [2020-10-12 15:34:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-12 15:34:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 203 transitions. [2020-10-12 15:34:55,799 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 203 transitions. Word has length 49 [2020-10-12 15:34:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:55,799 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 203 transitions. [2020-10-12 15:34:55,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:34:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 203 transitions. [2020-10-12 15:34:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:34:55,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:55,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 15:34:55,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:34:55,801 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash 992132748, now seen corresponding path program 3 times [2020-10-12 15:34:55,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:55,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529382360] [2020-10-12 15:34:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:57,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:34:57,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-12 15:34:57,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:34:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:57,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:57,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:57,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:57,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:57,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:57,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529382360] [2020-10-12 15:34:57,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:57,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:57,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953922922] [2020-10-12 15:34:57,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:57,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:57,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:57,656 INFO L87 Difference]: Start difference. First operand 186 states and 203 transitions. Second operand 12 states. [2020-10-12 15:34:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:58,731 INFO L93 Difference]: Finished difference Result 245 states and 269 transitions. [2020-10-12 15:34:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:34:58,732 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-12 15:34:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:58,734 INFO L225 Difference]: With dead ends: 245 [2020-10-12 15:34:58,734 INFO L226 Difference]: Without dead ends: 232 [2020-10-12 15:34:58,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:34:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-12 15:34:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 191. [2020-10-12 15:34:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-12 15:34:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 209 transitions. [2020-10-12 15:34:58,749 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 209 transitions. Word has length 49 [2020-10-12 15:34:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:58,750 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 209 transitions. [2020-10-12 15:34:58,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 209 transitions. [2020-10-12 15:34:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:34:58,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:58,751 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-10-12 15:34:58,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:34:58,752 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:58,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2084586658, now seen corresponding path program 1 times [2020-10-12 15:34:58,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:58,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335339756] [2020-10-12 15:34:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:59,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:59,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:34:59,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-12 15:34:59,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:34:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:34:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:59,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335339756] [2020-10-12 15:34:59,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:59,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:34:59,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338864071] [2020-10-12 15:34:59,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:34:59,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:59,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:34:59,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:59,996 INFO L87 Difference]: Start difference. First operand 191 states and 209 transitions. Second operand 13 states. [2020-10-12 15:35:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:01,473 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2020-10-12 15:35:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:35:01,474 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-12 15:35:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:01,475 INFO L225 Difference]: With dead ends: 258 [2020-10-12 15:35:01,476 INFO L226 Difference]: Without dead ends: 246 [2020-10-12 15:35:01,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:35:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-12 15:35:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 211. [2020-10-12 15:35:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-12 15:35:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 230 transitions. [2020-10-12 15:35:01,488 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 230 transitions. Word has length 49 [2020-10-12 15:35:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:01,489 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 230 transitions. [2020-10-12 15:35:01,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 230 transitions. [2020-10-12 15:35:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:35:01,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:01,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 15:35:01,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:35:01,491 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:01,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:01,491 INFO L82 PathProgramCache]: Analyzing trace with hash 568486026, now seen corresponding path program 2 times [2020-10-12 15:35:01,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:01,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329719989] [2020-10-12 15:35:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:02,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:02,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:35:02,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:02,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-12 15:35:02,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:35:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 15:35:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:02,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:02,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:02,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:02,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:02,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329719989] [2020-10-12 15:35:02,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:02,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:35:02,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181049746] [2020-10-12 15:35:02,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:35:02,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:02,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:35:02,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:35:02,467 INFO L87 Difference]: Start difference. First operand 211 states and 230 transitions. Second operand 12 states. [2020-10-12 15:35:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:03,723 INFO L93 Difference]: Finished difference Result 265 states and 287 transitions. [2020-10-12 15:35:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:35:03,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-12 15:35:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:03,725 INFO L225 Difference]: With dead ends: 265 [2020-10-12 15:35:03,726 INFO L226 Difference]: Without dead ends: 263 [2020-10-12 15:35:03,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:35:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-12 15:35:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 239. [2020-10-12 15:35:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-12 15:35:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 260 transitions. [2020-10-12 15:35:03,742 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 260 transitions. Word has length 49 [2020-10-12 15:35:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:03,743 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 260 transitions. [2020-10-12 15:35:03,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:35:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 260 transitions. [2020-10-12 15:35:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:35:03,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:03,744 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-10-12 15:35:03,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:35:03,744 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:03,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1660939936, now seen corresponding path program 5 times [2020-10-12 15:35:03,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:03,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923112471] [2020-10-12 15:35:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:04,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:04,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:35:04,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-12 15:35:04,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:35:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 15:35:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:04,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:04,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:04,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:04,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:04,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:04,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:04,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:04,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923112471] [2020-10-12 15:35:04,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:04,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:35:04,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015762481] [2020-10-12 15:35:04,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:35:04,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:04,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:35:04,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:35:04,434 INFO L87 Difference]: Start difference. First operand 239 states and 260 transitions. Second operand 12 states. [2020-10-12 15:35:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:05,529 INFO L93 Difference]: Finished difference Result 273 states and 297 transitions. [2020-10-12 15:35:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:35:05,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-12 15:35:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:05,532 INFO L225 Difference]: With dead ends: 273 [2020-10-12 15:35:05,532 INFO L226 Difference]: Without dead ends: 271 [2020-10-12 15:35:05,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:35:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-12 15:35:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 240. [2020-10-12 15:35:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-12 15:35:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 261 transitions. [2020-10-12 15:35:05,546 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 261 transitions. Word has length 49 [2020-10-12 15:35:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:05,546 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 261 transitions. [2020-10-12 15:35:05,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:35:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 261 transitions. [2020-10-12 15:35:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:05,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:05,547 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2020-10-12 15:35:05,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:35:05,547 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:05,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:05,548 INFO L82 PathProgramCache]: Analyzing trace with hash 2035739937, now seen corresponding path program 8 times [2020-10-12 15:35:05,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:05,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699678171] [2020-10-12 15:35:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:08,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3167 [2020-10-12 15:35:08,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:35:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:09,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:09,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:09,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699678171] [2020-10-12 15:35:09,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:09,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:09,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032167037] [2020-10-12 15:35:09,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:09,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:09,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:09,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:09,305 INFO L87 Difference]: Start difference. First operand 240 states and 261 transitions. Second operand 14 states. [2020-10-12 15:35:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:11,528 INFO L93 Difference]: Finished difference Result 293 states and 318 transitions. [2020-10-12 15:35:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:35:11,529 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-12 15:35:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:11,531 INFO L225 Difference]: With dead ends: 293 [2020-10-12 15:35:11,531 INFO L226 Difference]: Without dead ends: 281 [2020-10-12 15:35:11,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:35:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-12 15:35:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 244. [2020-10-12 15:35:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-12 15:35:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 266 transitions. [2020-10-12 15:35:11,546 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 266 transitions. Word has length 52 [2020-10-12 15:35:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:11,549 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 266 transitions. [2020-10-12 15:35:11,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 266 transitions. [2020-10-12 15:35:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:11,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:11,550 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-10-12 15:35:11,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:35:11,551 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:11,551 INFO L82 PathProgramCache]: Analyzing trace with hash 920653773, now seen corresponding path program 4 times [2020-10-12 15:35:11,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:11,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393065496] [2020-10-12 15:35:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:12,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:12,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-12 15:35:12,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:35:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:13,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:13,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:13,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393065496] [2020-10-12 15:35:13,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:13,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:13,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975408050] [2020-10-12 15:35:13,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:13,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:13,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:13,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:13,136 INFO L87 Difference]: Start difference. First operand 244 states and 266 transitions. Second operand 14 states. [2020-10-12 15:35:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:15,156 INFO L93 Difference]: Finished difference Result 281 states and 304 transitions. [2020-10-12 15:35:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:35:15,157 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-12 15:35:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:15,159 INFO L225 Difference]: With dead ends: 281 [2020-10-12 15:35:15,159 INFO L226 Difference]: Without dead ends: 279 [2020-10-12 15:35:15,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:35:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-12 15:35:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 244. [2020-10-12 15:35:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-12 15:35:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 266 transitions. [2020-10-12 15:35:15,175 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 266 transitions. Word has length 52 [2020-10-12 15:35:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:15,175 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 266 transitions. [2020-10-12 15:35:15,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 266 transitions. [2020-10-12 15:35:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:15,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:15,177 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2020-10-12 15:35:15,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:35:15,177 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2108126495, now seen corresponding path program 2 times [2020-10-12 15:35:15,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:15,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858808111] [2020-10-12 15:35:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:16,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-12 15:35:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:35:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:16,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:16,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858808111] [2020-10-12 15:35:16,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:16,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:16,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991397141] [2020-10-12 15:35:16,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:16,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:16,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:16,819 INFO L87 Difference]: Start difference. First operand 244 states and 266 transitions. Second operand 14 states. [2020-10-12 15:35:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:18,298 INFO L93 Difference]: Finished difference Result 317 states and 346 transitions. [2020-10-12 15:35:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:18,299 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-12 15:35:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:18,302 INFO L225 Difference]: With dead ends: 317 [2020-10-12 15:35:18,302 INFO L226 Difference]: Without dead ends: 315 [2020-10-12 15:35:18,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:35:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-12 15:35:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 262. [2020-10-12 15:35:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-12 15:35:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 287 transitions. [2020-10-12 15:35:18,325 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 287 transitions. Word has length 52 [2020-10-12 15:35:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:18,326 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 287 transitions. [2020-10-12 15:35:18,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 287 transitions. [2020-10-12 15:35:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:18,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:18,328 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2020-10-12 15:35:18,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:35:18,329 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:18,329 INFO L82 PathProgramCache]: Analyzing trace with hash -137452959, now seen corresponding path program 6 times [2020-10-12 15:35:18,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:18,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915651158] [2020-10-12 15:35:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:18,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:18,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:18,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-12 15:35:18,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:35:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:35:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:18,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:18,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:18,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:18,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:35:18,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915651158] [2020-10-12 15:35:18,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:18,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:35:18,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942264311] [2020-10-12 15:35:18,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:35:18,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:18,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:35:18,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:35:18,977 INFO L87 Difference]: Start difference. First operand 262 states and 287 transitions. Second operand 11 states. [2020-10-12 15:35:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:19,681 INFO L93 Difference]: Finished difference Result 284 states and 311 transitions. [2020-10-12 15:35:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:35:19,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-12 15:35:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:19,683 INFO L225 Difference]: With dead ends: 284 [2020-10-12 15:35:19,683 INFO L226 Difference]: Without dead ends: 254 [2020-10-12 15:35:19,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:35:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-12 15:35:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-12 15:35:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-12 15:35:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 278 transitions. [2020-10-12 15:35:19,699 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 278 transitions. Word has length 52 [2020-10-12 15:35:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:19,699 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 278 transitions. [2020-10-12 15:35:19,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 278 transitions. [2020-10-12 15:35:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 15:35:19,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:19,700 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 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] [2020-10-12 15:35:19,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:35:19,701 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1385592768, now seen corresponding path program 9 times [2020-10-12 15:35:19,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:19,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284749418] [2020-10-12 15:35:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:20,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:22,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 15:35:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:35:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3109 [2020-10-12 15:35:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:35:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 15:35:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:23,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:23,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:23,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:23,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284749418] [2020-10-12 15:35:23,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:23,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:35:23,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464486960] [2020-10-12 15:35:23,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:35:23,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:23,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:35:23,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:35:23,288 INFO L87 Difference]: Start difference. First operand 254 states and 278 transitions. Second operand 15 states. [2020-10-12 15:35:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:25,830 INFO L93 Difference]: Finished difference Result 333 states and 364 transitions. [2020-10-12 15:35:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:35:25,831 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-12 15:35:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:25,834 INFO L225 Difference]: With dead ends: 333 [2020-10-12 15:35:25,834 INFO L226 Difference]: Without dead ends: 331 [2020-10-12 15:35:25,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:35:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-12 15:35:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 243. [2020-10-12 15:35:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-12 15:35:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 266 transitions. [2020-10-12 15:35:25,850 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 266 transitions. Word has length 55 [2020-10-12 15:35:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:25,851 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 266 transitions. [2020-10-12 15:35:25,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:35:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 266 transitions. [2020-10-12 15:35:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 15:35:25,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:25,852 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 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] [2020-10-12 15:35:25,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:35:25,852 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:25,853 INFO L82 PathProgramCache]: Analyzing trace with hash -991225982, now seen corresponding path program 3 times [2020-10-12 15:35:25,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:25,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808449277] [2020-10-12 15:35:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:27,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:27,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 15:35:27,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-12 15:35:27,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:35:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:35:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:27,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:27,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:27,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:27,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:27,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:35:28,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808449277] [2020-10-12 15:35:28,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:28,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:28,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252986240] [2020-10-12 15:35:28,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:28,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:28,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:28,004 INFO L87 Difference]: Start difference. First operand 243 states and 266 transitions. Second operand 13 states. [2020-10-12 15:35:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:29,328 INFO L93 Difference]: Finished difference Result 278 states and 303 transitions. [2020-10-12 15:35:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:35:29,329 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-12 15:35:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:29,331 INFO L225 Difference]: With dead ends: 278 [2020-10-12 15:35:29,331 INFO L226 Difference]: Without dead ends: 221 [2020-10-12 15:35:29,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:35:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-12 15:35:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2020-10-12 15:35:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-12 15:35:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 237 transitions. [2020-10-12 15:35:29,346 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 237 transitions. Word has length 55 [2020-10-12 15:35:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:29,346 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 237 transitions. [2020-10-12 15:35:29,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 237 transitions. [2020-10-12 15:35:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:35:29,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:29,347 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:29,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:35:29,348 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash 800949157, now seen corresponding path program 5 times [2020-10-12 15:35:29,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:29,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89667980] [2020-10-12 15:35:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:30,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:30,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 15:35:30,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-10-12 15:35:30,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 15:35:30,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:31,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:31,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:31,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:31,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:31,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89667980] [2020-10-12 15:35:31,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:31,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:31,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335425875] [2020-10-12 15:35:31,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:31,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:31,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:31,476 INFO L87 Difference]: Start difference. First operand 219 states and 237 transitions. Second operand 13 states. [2020-10-12 15:35:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:32,459 INFO L93 Difference]: Finished difference Result 254 states and 275 transitions. [2020-10-12 15:35:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:32,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 15:35:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:32,462 INFO L225 Difference]: With dead ends: 254 [2020-10-12 15:35:32,462 INFO L226 Difference]: Without dead ends: 252 [2020-10-12 15:35:32,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:35:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-12 15:35:32,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 223. [2020-10-12 15:35:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-12 15:35:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 241 transitions. [2020-10-12 15:35:32,477 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 241 transitions. Word has length 57 [2020-10-12 15:35:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:32,477 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 241 transitions. [2020-10-12 15:35:32,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 241 transitions. [2020-10-12 15:35:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 15:35:32,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:32,478 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 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] [2020-10-12 15:35:32,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:35:32,479 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:32,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:32,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1855661249, now seen corresponding path program 10 times [2020-10-12 15:35:32,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:32,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698140888] [2020-10-12 15:35:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:32,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:37,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:37,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 15:35:37,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4800 [2020-10-12 15:35:37,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 15:35:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:37,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:37,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:37,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:37,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:35:37,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698140888] [2020-10-12 15:35:37,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:37,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:37,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133817182] [2020-10-12 15:35:37,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:37,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:37,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:37,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:37,651 INFO L87 Difference]: Start difference. First operand 223 states and 241 transitions. Second operand 14 states. [2020-10-12 15:35:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:39,555 INFO L93 Difference]: Finished difference Result 248 states and 268 transitions. [2020-10-12 15:35:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:35:39,556 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-12 15:35:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:39,557 INFO L225 Difference]: With dead ends: 248 [2020-10-12 15:35:39,558 INFO L226 Difference]: Without dead ends: 201 [2020-10-12 15:35:39,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:35:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-12 15:35:39,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 157. [2020-10-12 15:35:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 15:35:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2020-10-12 15:35:39,568 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 58 [2020-10-12 15:35:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:39,568 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2020-10-12 15:35:39,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2020-10-12 15:35:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:35:39,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:39,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:39,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 15:35:39,569 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:39,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:39,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1612014952, now seen corresponding path program 11 times [2020-10-12 15:35:39,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:39,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215245270] [2020-10-12 15:35:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:43,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:43,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:35:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:35:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4093 [2020-10-12 15:35:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:35:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:35:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:44,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:44,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:44,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:44,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:44,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:44,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:44,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215245270] [2020-10-12 15:35:44,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:44,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:44,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109882991] [2020-10-12 15:35:44,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:44,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:44,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:44,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:44,155 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand 14 states. [2020-10-12 15:35:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:46,275 INFO L93 Difference]: Finished difference Result 244 states and 262 transitions. [2020-10-12 15:35:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:46,275 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-12 15:35:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:46,277 INFO L225 Difference]: With dead ends: 244 [2020-10-12 15:35:46,277 INFO L226 Difference]: Without dead ends: 242 [2020-10-12 15:35:46,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:35:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-12 15:35:46,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 161. [2020-10-12 15:35:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 15:35:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2020-10-12 15:35:46,285 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 60 [2020-10-12 15:35:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:46,285 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2020-10-12 15:35:46,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2020-10-12 15:35:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:35:46,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:46,286 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:46,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 15:35:46,286 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:46,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1041411242, now seen corresponding path program 3 times [2020-10-12 15:35:46,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:46,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562210403] [2020-10-12 15:35:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:35:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:47,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:47,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:47,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562210403] [2020-10-12 15:35:47,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:47,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:47,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569305720] [2020-10-12 15:35:47,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:47,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:47,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:47,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:47,929 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand 14 states. [2020-10-12 15:35:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:49,629 INFO L93 Difference]: Finished difference Result 222 states and 242 transitions. [2020-10-12 15:35:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:35:49,630 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-12 15:35:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:49,631 INFO L225 Difference]: With dead ends: 222 [2020-10-12 15:35:49,631 INFO L226 Difference]: Without dead ends: 220 [2020-10-12 15:35:49,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:35:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-12 15:35:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-10-12 15:35:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-12 15:35:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 206 transitions. [2020-10-12 15:35:49,645 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 206 transitions. Word has length 60 [2020-10-12 15:35:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:49,645 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 206 transitions. [2020-10-12 15:35:49,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 206 transitions. [2020-10-12 15:35:49,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:35:49,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:49,646 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:49,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 15:35:49,646 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1465057964, now seen corresponding path program 4 times [2020-10-12 15:35:49,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:49,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474595153] [2020-10-12 15:35:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:50,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:50,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:35:50,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:50,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-12 15:35:50,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:50,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:50,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:50,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 15:35:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:50,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:50,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:50,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:50,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:50,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:50,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474595153] [2020-10-12 15:35:50,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:50,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:50,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827197833] [2020-10-12 15:35:50,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:50,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:50,811 INFO L87 Difference]: Start difference. First operand 190 states and 206 transitions. Second operand 13 states. [2020-10-12 15:35:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:52,021 INFO L93 Difference]: Finished difference Result 215 states and 233 transitions. [2020-10-12 15:35:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:35:52,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-12 15:35:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:52,023 INFO L225 Difference]: With dead ends: 215 [2020-10-12 15:35:52,024 INFO L226 Difference]: Without dead ends: 194 [2020-10-12 15:35:52,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:35:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-12 15:35:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 172. [2020-10-12 15:35:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-12 15:35:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 187 transitions. [2020-10-12 15:35:52,036 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 187 transitions. Word has length 60 [2020-10-12 15:35:52,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:52,036 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 187 transitions. [2020-10-12 15:35:52,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 187 transitions. [2020-10-12 15:35:52,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 15:35:52,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:52,037 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:52,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 15:35:52,038 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:52,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:52,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1667737959, now seen corresponding path program 12 times [2020-10-12 15:35:52,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:52,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415127793] [2020-10-12 15:35:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:55,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:57,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:57,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:35:57,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:35:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 15:35:57,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:35:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:35:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:57,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:57,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:57,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415127793] [2020-10-12 15:35:57,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:57,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:35:57,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003544089] [2020-10-12 15:35:57,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:35:57,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:57,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:35:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:35:57,937 INFO L87 Difference]: Start difference. First operand 172 states and 187 transitions. Second operand 16 states. [2020-10-12 15:36:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:00,612 INFO L93 Difference]: Finished difference Result 292 states and 317 transitions. [2020-10-12 15:36:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:36:00,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-10-12 15:36:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:00,614 INFO L225 Difference]: With dead ends: 292 [2020-10-12 15:36:00,615 INFO L226 Difference]: Without dead ends: 280 [2020-10-12 15:36:00,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:36:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-12 15:36:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2020-10-12 15:36:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-12 15:36:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 281 transitions. [2020-10-12 15:36:00,628 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 281 transitions. Word has length 63 [2020-10-12 15:36:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:00,629 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 281 transitions. [2020-10-12 15:36:00,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:36:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 281 transitions. [2020-10-12 15:36:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 15:36:00,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:00,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:00,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 15:36:00,630 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:00,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1512143173, now seen corresponding path program 6 times [2020-10-12 15:36:00,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:00,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424090452] [2020-10-12 15:36:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:01,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:36:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2784 [2020-10-12 15:36:03,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:36:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 15:36:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:04,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424090452] [2020-10-12 15:36:04,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:04,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:36:04,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191378225] [2020-10-12 15:36:04,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:36:04,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:04,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:36:04,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:36:04,012 INFO L87 Difference]: Start difference. First operand 258 states and 281 transitions. Second operand 16 states. [2020-10-12 15:36:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:06,448 INFO L93 Difference]: Finished difference Result 280 states and 303 transitions. [2020-10-12 15:36:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:36:06,449 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-10-12 15:36:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:06,451 INFO L225 Difference]: With dead ends: 280 [2020-10-12 15:36:06,451 INFO L226 Difference]: Without dead ends: 278 [2020-10-12 15:36:06,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:36:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-12 15:36:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 258. [2020-10-12 15:36:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-12 15:36:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 281 transitions. [2020-10-12 15:36:06,469 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 281 transitions. Word has length 63 [2020-10-12 15:36:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:06,469 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 281 transitions. [2020-10-12 15:36:06,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:36:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 281 transitions. [2020-10-12 15:36:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 15:36:06,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:06,470 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:06,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 15:36:06,471 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash 381649883, now seen corresponding path program 4 times [2020-10-12 15:36:06,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:06,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10078515] [2020-10-12 15:36:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:08,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:08,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:36:08,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2416 [2020-10-12 15:36:08,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:36:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 15:36:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:09,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:09,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10078515] [2020-10-12 15:36:09,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:09,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:36:09,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391008418] [2020-10-12 15:36:09,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:36:09,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:09,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:36:09,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:36:09,414 INFO L87 Difference]: Start difference. First operand 258 states and 281 transitions. Second operand 15 states. [2020-10-12 15:36:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:12,175 INFO L93 Difference]: Finished difference Result 512 states and 561 transitions. [2020-10-12 15:36:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:36:12,175 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-12 15:36:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:12,178 INFO L225 Difference]: With dead ends: 512 [2020-10-12 15:36:12,178 INFO L226 Difference]: Without dead ends: 510 [2020-10-12 15:36:12,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:36:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-12 15:36:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 338. [2020-10-12 15:36:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-12 15:36:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 370 transitions. [2020-10-12 15:36:12,201 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 370 transitions. Word has length 63 [2020-10-12 15:36:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:12,202 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 370 transitions. [2020-10-12 15:36:12,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:36:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 370 transitions. [2020-10-12 15:36:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 15:36:12,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:12,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:12,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 15:36:12,203 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:12,204 INFO L82 PathProgramCache]: Analyzing trace with hash -733436281, now seen corresponding path program 5 times [2020-10-12 15:36:12,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:12,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572883161] [2020-10-12 15:36:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:13,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:13,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:36:13,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-12 15:36:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:36:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 15:36:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:14,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572883161] [2020-10-12 15:36:14,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:14,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:36:14,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312865719] [2020-10-12 15:36:14,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:36:14,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:14,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:36:14,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:36:14,717 INFO L87 Difference]: Start difference. First operand 338 states and 370 transitions. Second operand 15 states. [2020-10-12 15:36:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:16,683 INFO L93 Difference]: Finished difference Result 411 states and 449 transitions. [2020-10-12 15:36:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:36:16,684 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-12 15:36:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:16,686 INFO L225 Difference]: With dead ends: 411 [2020-10-12 15:36:16,686 INFO L226 Difference]: Without dead ends: 398 [2020-10-12 15:36:16,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:36:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-12 15:36:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 342. [2020-10-12 15:36:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 15:36:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 373 transitions. [2020-10-12 15:36:16,712 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 373 transitions. Word has length 63 [2020-10-12 15:36:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:16,712 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 373 transitions. [2020-10-12 15:36:16,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:36:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 373 transitions. [2020-10-12 15:36:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 15:36:16,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:16,714 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:16,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 15:36:16,714 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:16,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:16,714 INFO L82 PathProgramCache]: Analyzing trace with hash 454036441, now seen corresponding path program 5 times [2020-10-12 15:36:16,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:16,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166842466] [2020-10-12 15:36:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:18,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:18,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:36:18,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1445 [2020-10-12 15:36:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:36:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:36:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:18,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:18,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:18,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:18,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166842466] [2020-10-12 15:36:18,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:18,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:36:18,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694494285] [2020-10-12 15:36:18,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:36:18,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:36:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:36:18,906 INFO L87 Difference]: Start difference. First operand 342 states and 373 transitions. Second operand 15 states. [2020-10-12 15:36:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:21,003 INFO L93 Difference]: Finished difference Result 443 states and 482 transitions. [2020-10-12 15:36:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:36:21,004 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-12 15:36:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:21,006 INFO L225 Difference]: With dead ends: 443 [2020-10-12 15:36:21,007 INFO L226 Difference]: Without dead ends: 431 [2020-10-12 15:36:21,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:36:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-12 15:36:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 396. [2020-10-12 15:36:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-10-12 15:36:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 431 transitions. [2020-10-12 15:36:21,030 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 431 transitions. Word has length 63 [2020-10-12 15:36:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:21,031 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 431 transitions. [2020-10-12 15:36:21,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:36:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 431 transitions. [2020-10-12 15:36:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:36:21,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:21,032 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:21,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 15:36:21,033 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:21,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1719274440, now seen corresponding path program 13 times [2020-10-12 15:36:21,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:21,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498682921] [2020-10-12 15:36:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:26,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:26,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 15:36:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:36:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-12 15:36:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:36:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 15:36:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:26,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:26,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:26,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:26,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:26,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498682921] [2020-10-12 15:36:26,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:26,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:36:26,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044798780] [2020-10-12 15:36:26,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:36:26,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:26,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:36:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:36:26,872 INFO L87 Difference]: Start difference. First operand 396 states and 431 transitions. Second operand 17 states. [2020-10-12 15:36:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:30,935 INFO L93 Difference]: Finished difference Result 789 states and 864 transitions. [2020-10-12 15:36:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:36:30,936 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-10-12 15:36:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:30,938 INFO L225 Difference]: With dead ends: 789 [2020-10-12 15:36:30,939 INFO L226 Difference]: Without dead ends: 787 [2020-10-12 15:36:30,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:36:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-12 15:36:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 518. [2020-10-12 15:36:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-12 15:36:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 568 transitions. [2020-10-12 15:36:30,970 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 568 transitions. Word has length 66 [2020-10-12 15:36:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:30,971 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 568 transitions. [2020-10-12 15:36:30,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:36:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 568 transitions. [2020-10-12 15:36:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:36:30,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:30,973 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:30,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 15:36:30,973 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:30,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:30,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2113641226, now seen corresponding path program 6 times [2020-10-12 15:36:30,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:30,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050790485] [2020-10-12 15:36:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:36,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:36,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 15:36:36,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:36:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:36:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:36:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 15:36:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:36,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:36,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:36,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:36,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:36,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050790485] [2020-10-12 15:36:36,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:36,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:36:36,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535354744] [2020-10-12 15:36:36,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:36:36,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:36,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:36:36,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:36:36,798 INFO L87 Difference]: Start difference. First operand 518 states and 568 transitions. Second operand 17 states. [2020-10-12 15:36:40,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:40,417 INFO L93 Difference]: Finished difference Result 665 states and 726 transitions. [2020-10-12 15:36:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:36:40,418 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-10-12 15:36:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:40,421 INFO L225 Difference]: With dead ends: 665 [2020-10-12 15:36:40,421 INFO L226 Difference]: Without dead ends: 653 [2020-10-12 15:36:40,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:36:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-12 15:36:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 582. [2020-10-12 15:36:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-12 15:36:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 638 transitions. [2020-10-12 15:36:40,457 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 638 transitions. Word has length 66 [2020-10-12 15:36:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:40,457 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 638 transitions. [2020-10-12 15:36:40,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:36:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 638 transitions. [2020-10-12 15:36:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:36:40,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:40,459 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:40,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 15:36:40,459 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:40,460 INFO L82 PathProgramCache]: Analyzing trace with hash 957276658, now seen corresponding path program 6 times [2020-10-12 15:36:40,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:40,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444575623] [2020-10-12 15:36:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:43,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:43,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 15:36:43,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:36:43,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2902 [2020-10-12 15:36:43,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:36:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 15:36:43,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:43,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:43,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:43,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444575623] [2020-10-12 15:36:43,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:43,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:36:43,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294690100] [2020-10-12 15:36:43,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:36:43,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:36:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:36:43,980 INFO L87 Difference]: Start difference. First operand 582 states and 638 transitions. Second operand 16 states. [2020-10-12 15:36:46,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:46,719 INFO L93 Difference]: Finished difference Result 671 states and 733 transitions. [2020-10-12 15:36:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:36:46,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-12 15:36:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:46,723 INFO L225 Difference]: With dead ends: 671 [2020-10-12 15:36:46,723 INFO L226 Difference]: Without dead ends: 669 [2020-10-12 15:36:46,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:36:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-10-12 15:36:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 630. [2020-10-12 15:36:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-12 15:36:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 690 transitions. [2020-10-12 15:36:46,759 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 690 transitions. Word has length 66 [2020-10-12 15:36:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:46,759 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 690 transitions. [2020-10-12 15:36:46,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:36:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 690 transitions. [2020-10-12 15:36:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:36:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:46,761 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:46,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 15:36:46,762 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1828237688, now seen corresponding path program 7 times [2020-10-12 15:36:46,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:46,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712643162] [2020-10-12 15:36:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:49,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:49,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 15:36:49,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:36:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2504 [2020-10-12 15:36:49,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:36:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 15:36:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:49,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:49,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712643162] [2020-10-12 15:36:49,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:49,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:36:49,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653206659] [2020-10-12 15:36:49,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:36:49,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:49,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:36:49,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:36:49,802 INFO L87 Difference]: Start difference. First operand 630 states and 690 transitions. Second operand 16 states. [2020-10-12 15:36:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:52,091 INFO L93 Difference]: Finished difference Result 682 states and 746 transitions. [2020-10-12 15:36:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:36:52,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-12 15:36:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:52,094 INFO L225 Difference]: With dead ends: 682 [2020-10-12 15:36:52,094 INFO L226 Difference]: Without dead ends: 680 [2020-10-12 15:36:52,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:36:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-12 15:36:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 644. [2020-10-12 15:36:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-10-12 15:36:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 705 transitions. [2020-10-12 15:36:52,130 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 705 transitions. Word has length 66 [2020-10-12 15:36:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:52,130 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 705 transitions. [2020-10-12 15:36:52,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:36:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 705 transitions. [2020-10-12 15:36:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 15:36:52,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:52,132 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:52,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 15:36:52,132 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1755999175, now seen corresponding path program 14 times [2020-10-12 15:36:52,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:52,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729262952] [2020-10-12 15:36:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:52,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:54,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:57,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:57,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 15:36:57,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:36:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 15:36:57,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:36:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:36:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:58,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:58,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:58,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:58,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:36:58,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:58,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729262952] [2020-10-12 15:36:58,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:58,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:36:58,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751181553] [2020-10-12 15:36:58,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:36:58,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:36:58,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:36:58,132 INFO L87 Difference]: Start difference. First operand 644 states and 705 transitions. Second operand 18 states. [2020-10-12 15:37:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:02,602 INFO L93 Difference]: Finished difference Result 757 states and 824 transitions. [2020-10-12 15:37:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 15:37:02,603 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-10-12 15:37:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:02,606 INFO L225 Difference]: With dead ends: 757 [2020-10-12 15:37:02,606 INFO L226 Difference]: Without dead ends: 745 [2020-10-12 15:37:02,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:37:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-10-12 15:37:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 648. [2020-10-12 15:37:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-12 15:37:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 711 transitions. [2020-10-12 15:37:02,643 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 711 transitions. Word has length 69 [2020-10-12 15:37:02,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:02,643 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 711 transitions. [2020-10-12 15:37:02,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:37:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 711 transitions. [2020-10-12 15:37:02,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 15:37:02,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:02,645 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:02,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 15:37:02,645 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1423881957, now seen corresponding path program 7 times [2020-10-12 15:37:02,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:02,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348662285] [2020-10-12 15:37:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:07,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:07,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 15:37:07,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:37:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 15:37:07,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:37:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 15:37:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:08,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:08,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:08,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:08,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:08,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:08,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:08,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348662285] [2020-10-12 15:37:08,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:08,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:37:08,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493958183] [2020-10-12 15:37:08,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:37:08,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:08,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:37:08,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:37:08,643 INFO L87 Difference]: Start difference. First operand 648 states and 711 transitions. Second operand 18 states. [2020-10-12 15:37:13,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:13,082 INFO L93 Difference]: Finished difference Result 743 states and 809 transitions. [2020-10-12 15:37:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 15:37:13,083 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-10-12 15:37:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:13,086 INFO L225 Difference]: With dead ends: 743 [2020-10-12 15:37:13,086 INFO L226 Difference]: Without dead ends: 741 [2020-10-12 15:37:13,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:37:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-10-12 15:37:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 582. [2020-10-12 15:37:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-12 15:37:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 639 transitions. [2020-10-12 15:37:13,112 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 639 transitions. Word has length 69 [2020-10-12 15:37:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:13,113 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 639 transitions. [2020-10-12 15:37:13,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:37:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 639 transitions. [2020-10-12 15:37:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 15:37:13,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:13,115 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:13,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 15:37:13,115 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:13,115 INFO L82 PathProgramCache]: Analyzing trace with hash 89367991, now seen corresponding path program 8 times [2020-10-12 15:37:13,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:13,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610784682] [2020-10-12 15:37:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:14,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:18,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:18,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 15:37:18,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:37:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5278 [2020-10-12 15:37:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:37:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 15:37:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:19,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610784682] [2020-10-12 15:37:19,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:19,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:37:19,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252429187] [2020-10-12 15:37:19,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:37:19,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:19,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:37:19,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:37:19,198 INFO L87 Difference]: Start difference. First operand 582 states and 639 transitions. Second operand 18 states. [2020-10-12 15:37:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:22,653 INFO L93 Difference]: Finished difference Result 664 states and 726 transitions. [2020-10-12 15:37:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:37:22,654 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2020-10-12 15:37:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:22,656 INFO L225 Difference]: With dead ends: 664 [2020-10-12 15:37:22,656 INFO L226 Difference]: Without dead ends: 662 [2020-10-12 15:37:22,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:37:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-10-12 15:37:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 603. [2020-10-12 15:37:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-12 15:37:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 662 transitions. [2020-10-12 15:37:22,684 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 662 transitions. Word has length 69 [2020-10-12 15:37:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:22,684 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 662 transitions. [2020-10-12 15:37:22,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:37:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 662 transitions. [2020-10-12 15:37:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 15:37:22,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:22,689 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:22,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 15:37:22,689 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash 570448249, now seen corresponding path program 9 times [2020-10-12 15:37:22,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:22,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971727918] [2020-10-12 15:37:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:22,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1878 [2020-10-12 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:37:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:37:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:24,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:24,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 74 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:37:25,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971727918] [2020-10-12 15:37:25,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:25,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:37:25,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551465812] [2020-10-12 15:37:25,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:37:25,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:25,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:37:25,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:37:25,019 INFO L87 Difference]: Start difference. First operand 603 states and 662 transitions. Second operand 15 states. [2020-10-12 15:37:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:27,026 INFO L93 Difference]: Finished difference Result 639 states and 700 transitions. [2020-10-12 15:37:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:37:27,027 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-12 15:37:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:27,029 INFO L225 Difference]: With dead ends: 639 [2020-10-12 15:37:27,029 INFO L226 Difference]: Without dead ends: 579 [2020-10-12 15:37:27,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:37:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-12 15:37:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2020-10-12 15:37:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-12 15:37:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 631 transitions. [2020-10-12 15:37:27,068 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 631 transitions. Word has length 69 [2020-10-12 15:37:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:27,068 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 631 transitions. [2020-10-12 15:37:27,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:37:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 631 transitions. [2020-10-12 15:37:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 15:37:27,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:27,070 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:27,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 15:37:27,071 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:27,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash 442233098, now seen corresponding path program 7 times [2020-10-12 15:37:27,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:27,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702275411] [2020-10-12 15:37:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2069 [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 15:37:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:29,530 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-12 15:37:29,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:29,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:29,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:29,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:29,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:30,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702275411] [2020-10-12 15:37:30,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:30,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:37:30,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505225085] [2020-10-12 15:37:30,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:37:30,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:30,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:37:30,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:37:30,019 INFO L87 Difference]: Start difference. First operand 577 states and 631 transitions. Second operand 16 states. [2020-10-12 15:37:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:32,127 INFO L93 Difference]: Finished difference Result 723 states and 794 transitions. [2020-10-12 15:37:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:37:32,127 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-12 15:37:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:32,130 INFO L225 Difference]: With dead ends: 723 [2020-10-12 15:37:32,130 INFO L226 Difference]: Without dead ends: 721 [2020-10-12 15:37:32,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:37:32,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-10-12 15:37:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 625. [2020-10-12 15:37:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-12 15:37:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 684 transitions. [2020-10-12 15:37:32,159 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 684 transitions. Word has length 71 [2020-10-12 15:37:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:32,160 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 684 transitions. [2020-10-12 15:37:32,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:37:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 684 transitions. [2020-10-12 15:37:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 15:37:32,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:32,161 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:32,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 15:37:32,161 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1096106932, now seen corresponding path program 8 times [2020-10-12 15:37:32,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:32,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813921067] [2020-10-12 15:37:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 15:37:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-12 15:37:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:37:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 15:37:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:34,527 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-10-12 15:37:34,763 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-10-12 15:37:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:35,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:35,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:35,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:35,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:35,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:35,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:35,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:35,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813921067] [2020-10-12 15:37:35,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:35,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:37:35,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925442064] [2020-10-12 15:37:35,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:37:35,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:35,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:37:35,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:37:35,225 INFO L87 Difference]: Start difference. First operand 625 states and 684 transitions. Second operand 15 states. [2020-10-12 15:37:36,514 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-12 15:37:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:37,449 INFO L93 Difference]: Finished difference Result 748 states and 822 transitions. [2020-10-12 15:37:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:37:37,450 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-12 15:37:37,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:37,452 INFO L225 Difference]: With dead ends: 748 [2020-10-12 15:37:37,452 INFO L226 Difference]: Without dead ends: 658 [2020-10-12 15:37:37,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:37:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-12 15:37:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 568. [2020-10-12 15:37:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-12 15:37:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 616 transitions. [2020-10-12 15:37:37,479 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 616 transitions. Word has length 71 [2020-10-12 15:37:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:37,479 INFO L479 AbstractCegarLoop]: Abstraction has 568 states and 616 transitions. [2020-10-12 15:37:37,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:37:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 616 transitions. [2020-10-12 15:37:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 15:37:37,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:37,481 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:37,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 15:37:37,481 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash 849373736, now seen corresponding path program 15 times [2020-10-12 15:37:37,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:37,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048141228] [2020-10-12 15:37:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:37:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:43,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:43,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:43,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:43,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 7 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:43,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048141228] [2020-10-12 15:37:43,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:43,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:37:43,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041123725] [2020-10-12 15:37:43,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:37:43,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:43,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:37:43,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:37:43,386 INFO L87 Difference]: Start difference. First operand 568 states and 616 transitions. Second operand 18 states. [2020-10-12 15:37:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:48,185 INFO L93 Difference]: Finished difference Result 616 states and 670 transitions. [2020-10-12 15:37:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:37:48,185 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 72 [2020-10-12 15:37:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:48,188 INFO L225 Difference]: With dead ends: 616 [2020-10-12 15:37:48,188 INFO L226 Difference]: Without dead ends: 441 [2020-10-12 15:37:48,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:37:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-12 15:37:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 412. [2020-10-12 15:37:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-12 15:37:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 444 transitions. [2020-10-12 15:37:48,208 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 444 transitions. Word has length 72 [2020-10-12 15:37:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:48,209 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 444 transitions. [2020-10-12 15:37:48,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:37:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 444 transitions. [2020-10-12 15:37:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 15:37:48,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:48,210 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:48,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 15:37:48,210 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:48,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1138219105, now seen corresponding path program 10 times [2020-10-12 15:37:48,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:48,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482171282] [2020-10-12 15:37:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:52,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:52,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 15:37:52,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:37:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4064 [2020-10-12 15:37:52,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:37:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 15:37:52,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:53,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:53,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:53,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:53,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:53,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:53,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:53,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482171282] [2020-10-12 15:37:53,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:53,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:37:53,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605879351] [2020-10-12 15:37:53,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:37:53,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:53,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:37:53,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:37:53,092 INFO L87 Difference]: Start difference. First operand 412 states and 444 transitions. Second operand 16 states. [2020-10-12 15:37:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:56,204 INFO L93 Difference]: Finished difference Result 465 states and 500 transitions. [2020-10-12 15:37:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:37:56,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-12 15:37:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:56,207 INFO L225 Difference]: With dead ends: 465 [2020-10-12 15:37:56,207 INFO L226 Difference]: Without dead ends: 463 [2020-10-12 15:37:56,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:37:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-12 15:37:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 432. [2020-10-12 15:37:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-12 15:37:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 465 transitions. [2020-10-12 15:37:56,233 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 465 transitions. Word has length 74 [2020-10-12 15:37:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:56,233 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 465 transitions. [2020-10-12 15:37:56,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:37:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 465 transitions. [2020-10-12 15:37:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 15:37:56,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:56,234 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:56,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 15:37:56,234 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:56,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1634304832, now seen corresponding path program 16 times [2020-10-12 15:37:56,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:56,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417408200] [2020-10-12 15:37:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:01,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:01,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 15:38:01,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:01,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 15:38:01,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:38:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 15:38:01,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:01,970 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 15:38:02,120 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-12 15:38:02,275 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-10-12 15:38:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:02,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:02,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:02,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:02,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:02,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:02,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417408200] [2020-10-12 15:38:02,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:02,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:38:02,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932637553] [2020-10-12 15:38:02,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:38:02,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:02,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:38:02,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:38:02,686 INFO L87 Difference]: Start difference. First operand 432 states and 465 transitions. Second operand 19 states. [2020-10-12 15:38:04,916 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-12 15:38:05,607 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-12 15:38:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:07,141 INFO L93 Difference]: Finished difference Result 535 states and 580 transitions. [2020-10-12 15:38:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:38:07,142 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 77 [2020-10-12 15:38:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:07,144 INFO L225 Difference]: With dead ends: 535 [2020-10-12 15:38:07,144 INFO L226 Difference]: Without dead ends: 533 [2020-10-12 15:38:07,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 15:38:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-10-12 15:38:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 436. [2020-10-12 15:38:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-12 15:38:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 470 transitions. [2020-10-12 15:38:07,174 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 470 transitions. Word has length 77 [2020-10-12 15:38:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:07,175 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 470 transitions. [2020-10-12 15:38:07,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:38:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 470 transitions. [2020-10-12 15:38:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 15:38:07,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:07,176 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:07,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 15:38:07,177 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash 85489582, now seen corresponding path program 9 times [2020-10-12 15:38:07,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:07,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709022749] [2020-10-12 15:38:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4537 [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 15:38:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:12,389 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-12 15:38:12,522 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-12 15:38:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:12,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:12,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709022749] [2020-10-12 15:38:12,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:12,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:38:12,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960581719] [2020-10-12 15:38:12,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:38:12,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:12,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:38:12,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:38:12,973 INFO L87 Difference]: Start difference. First operand 436 states and 470 transitions. Second operand 18 states.