/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:04:21,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:04:21,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:04:21,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:04:21,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:04:21,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:04:21,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:04:21,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:04:21,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:04:21,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:04:21,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:04:21,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:04:21,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:04:21,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:04:21,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:04:21,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:04:21,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:04:21,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:04:21,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:04:21,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:04:21,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:04:21,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:04:21,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:04:21,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:04:21,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:04:21,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:04:21,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:04:21,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:04:21,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:04:21,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:04:21,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:04:21,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:04:21,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:04:21,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:04:21,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:04:21,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:04:21,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:04:21,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:04:21,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:04:21,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:04:21,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:04:21,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:04:21,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:04:21,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:04:21,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:04:21,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:04:21,722 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:04:21,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:04:21,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:04:21,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:04:21,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:04:21,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:04:21,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:04:21,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:04:21,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:04:21,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:04:21,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:04:21,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:04:21,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:04:21,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:04:21,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:04:21,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:04:21,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:04:21,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:04:21,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:04:21,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:04:21,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:04:21,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:04:21,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:04:21,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:04:21,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:04:21,727 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.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:04:22,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:04:22,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:04:22,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:04:22,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:04:22,199 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:04:22,200 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-21 11:04:22,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59afa88c/5f4ff13d096e491f8efbc95cd7db387f/FLAG7d2bf2e61 [2020-09-21 11:04:22,908 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:04:22,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-21 11:04:22,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59afa88c/5f4ff13d096e491f8efbc95cd7db387f/FLAG7d2bf2e61 [2020-09-21 11:04:23,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b59afa88c/5f4ff13d096e491f8efbc95cd7db387f [2020-09-21 11:04:23,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:04:23,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:04:23,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:04:23,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:04:23,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:04:23,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:23,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f90b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23, skipping insertion in model container [2020-09-21 11:04:23,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:23,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:04:23,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:04:23,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:04:23,846 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:04:23,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:04:23,989 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:04:23,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23 WrapperNode [2020-09-21 11:04:23,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:04:23,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:04:23,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:04:23,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:04:24,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:24,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:24,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:24,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:24,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:24,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:24,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... [2020-09-21 11:04:24,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:04:24,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:04:24,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:04:24,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:04:24,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:04:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:04:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:04:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:04:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:04:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:04:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:04:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:04:24,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:04:24,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:04:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:04:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:04:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:04:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:04:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:04:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:04:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:04:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:04:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:04:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 11:04:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:04:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:04:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:04:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:04:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:04:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:04:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:04:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:04:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:04:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:04:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:04:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:04:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:04:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:04:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:04:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:04:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:04:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 11:04:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:04:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:04:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:04:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:04:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:04:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:04:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:04:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:04:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:04:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:04:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:04:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:04:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:04:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:04:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:04:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:04:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:04:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:04:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:04:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:04:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:04:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:04:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:04:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:04:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 11:04:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:04:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:04:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:04:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:04:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:04:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:04:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:04:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:04:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 11:04:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:04:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:04:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:04:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:04:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:04:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:04:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:04:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:04:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:04:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:04:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:04:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:04:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:04:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:04:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:04:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:04:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:04:25,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:04:25,255 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:04:25,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:04:25 BoogieIcfgContainer [2020-09-21 11:04:25,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:04:25,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:04:25,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:04:25,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:04:25,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:04:23" (1/3) ... [2020-09-21 11:04:25,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290ac825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:04:25, skipping insertion in model container [2020-09-21 11:04:25,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:23" (2/3) ... [2020-09-21 11:04:25,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290ac825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:04:25, skipping insertion in model container [2020-09-21 11:04:25,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:04:25" (3/3) ... [2020-09-21 11:04:25,272 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-09-21 11:04:25,284 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:04:25,296 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:04:25,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:04:25,353 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:04:25,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:04:25,354 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:04:25,354 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:04:25,354 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:04:25,354 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:04:25,354 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:04:25,354 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:04:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-09-21 11:04:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 11:04:25,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:25,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:25,396 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:25,404 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-09-21 11:04:25,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:25,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056671236] [2020-09-21 11:04:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:25,810 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:25,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:25,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:25,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:25,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 11:04:25,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:04:25,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:04:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:26,255 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:26,270 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:26,271 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:26,271 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:26,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:26,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:26,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:26,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:26,336 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:26,336 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:26,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:26,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:26,343 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:26,344 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:26,344 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:26,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:26,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:26,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:26,351 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:26,351 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:26,351 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:26,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:26,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:26,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:26,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:26,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:26,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:26,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:26,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:26,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:26,359 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:26,359 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:26,359 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:26,363 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:26,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:26,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:04:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:26,371 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:26,371 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:26,372 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:04:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:04:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:26,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:26,388 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:26,388 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:26,388 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:26,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:26,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:26,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:26,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:26,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056671236] [2020-09-21 11:04:26,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:26,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:04:26,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391570002] [2020-09-21 11:04:26,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:04:26,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:04:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:04:26,446 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-09-21 11:04:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:27,478 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-09-21 11:04:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:04:27,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 11:04:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:27,498 INFO L225 Difference]: With dead ends: 249 [2020-09-21 11:04:27,498 INFO L226 Difference]: Without dead ends: 135 [2020-09-21 11:04:27,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:04:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-21 11:04:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-09-21 11:04:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-21 11:04:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-09-21 11:04:27,608 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-09-21 11:04:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:27,608 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-09-21 11:04:27,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:04:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-09-21 11:04:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 11:04:27,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:27,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:27,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:04:27,613 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:27,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-09-21 11:04:27,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:27,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116596545] [2020-09-21 11:04:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:27,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:27,732 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:27,732 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:27,732 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:27,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:04:27,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:04:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:04:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:04:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,126 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:28,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:28,137 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:28,137 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:28,138 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:28,138 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:28,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:28,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:28,194 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:28,194 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:28,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:28,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:28,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:28,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:28,201 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:28,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:28,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:28,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:28,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:28,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:28,209 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:28,210 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:28,210 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:28,210 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:28,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:28,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:28,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:28,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:28,217 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:28,217 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:28,218 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:28,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:28,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:04:28,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:04:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:28,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:28,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:28,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:28,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:28,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:04:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:28,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:28,236 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:28,236 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:28,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:28,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:28,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:28,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116596545] [2020-09-21 11:04:28,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:28,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:04:28,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580367930] [2020-09-21 11:04:28,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:04:28,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:28,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:04:28,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:04:28,256 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-09-21 11:04:28,726 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:29,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:29,518 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-09-21 11:04:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:04:29,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 11:04:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:29,524 INFO L225 Difference]: With dead ends: 182 [2020-09-21 11:04:29,524 INFO L226 Difference]: Without dead ends: 119 [2020-09-21 11:04:29,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:04:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-21 11:04:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-09-21 11:04:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 11:04:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-21 11:04:29,561 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-09-21 11:04:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:29,561 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-21 11:04:29,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:04:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-21 11:04:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 11:04:29,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:29,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:29,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:04:29,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 268149636, now seen corresponding path program 1 times [2020-09-21 11:04:29,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:29,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883550308] [2020-09-21 11:04:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:29,692 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:04:29,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:29,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:29,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:29,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 11:04:29,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 11:04:29,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 11:04:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,038 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:30,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:30,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:30,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:30,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:30,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:30,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 11:04:30,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:30,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:30,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:30,148 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:30,148 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:30,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:30,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:30,154 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:30,154 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:30,155 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:30,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:30,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:30,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:30,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:30,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:30,160 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:30,161 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:30,161 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:30,161 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:30,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:30,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:30,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:30,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:30,168 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:30,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:30,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:30,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:30,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:04:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:30,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:30,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:30,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:30,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:30,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:30,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:30,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:04:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:30,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:30,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:30,180 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:30,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:30,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:30,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:30,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:30,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:30,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:30,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883550308] [2020-09-21 11:04:30,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:30,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:04:30,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741103197] [2020-09-21 11:04:30,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:04:30,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:30,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:04:30,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:04:30,220 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 4 states. [2020-09-21 11:04:30,545 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:31,208 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-09-21 11:04:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:04:31,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 11:04:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:31,212 INFO L225 Difference]: With dead ends: 191 [2020-09-21 11:04:31,212 INFO L226 Difference]: Without dead ends: 119 [2020-09-21 11:04:31,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:04:31,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-21 11:04:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-09-21 11:04:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 11:04:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-09-21 11:04:31,247 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-09-21 11:04:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:31,247 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-09-21 11:04:31,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:04:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-09-21 11:04:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 11:04:31,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:31,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:31,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:04:31,251 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:31,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:31,251 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-09-21 11:04:31,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:31,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977630575] [2020-09-21 11:04:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:31,704 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:31,705 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:31,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:31,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:31,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:04:31,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-21 11:04:31,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:04:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:04:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:31,988 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:04:32,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,095 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,095 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,096 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,096 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:32,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,101 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,101 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,101 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,102 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:04:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,127 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,127 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:04:32,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:04:32,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:04:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:04:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:04:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,192 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,193 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,193 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 11:04:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,198 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,199 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,199 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,199 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:32,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977630575] [2020-09-21 11:04:32,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:32,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:04:32,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940479545] [2020-09-21 11:04:32,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:04:32,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:04:32,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:04:32,212 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 7 states. [2020-09-21 11:04:32,530 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:33,758 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 11:04:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:34,236 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-09-21 11:04:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:04:34,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-21 11:04:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:34,246 INFO L225 Difference]: With dead ends: 274 [2020-09-21 11:04:34,246 INFO L226 Difference]: Without dead ends: 202 [2020-09-21 11:04:34,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:04:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-21 11:04:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-09-21 11:04:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-21 11:04:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-09-21 11:04:34,321 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-09-21 11:04:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:34,322 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-09-21 11:04:34,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:04:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-09-21 11:04:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 11:04:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:34,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:34,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:04:34,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-09-21 11:04:34,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:34,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193944874] [2020-09-21 11:04:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:34,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:34,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:34,741 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:34,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:04:34,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-21 11:04:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:04:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-21 11:04:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:35,110 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:35,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,166 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,166 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,166 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:35,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:04:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,202 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:35,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:35,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:35,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,207 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,208 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,208 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,208 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:35,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:35,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,221 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,221 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:35,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,227 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,228 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,228 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:35,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:35,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:04:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,248 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:04:35,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:35,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 11:04:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,258 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,259 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,259 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:35,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:35,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,266 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:35,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,273 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:35,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:35,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 11:04:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,285 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,285 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,285 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:35,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:04:35,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:04:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:35,310 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:35,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193944874] [2020-09-21 11:04:35,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:35,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:04:35,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647160657] [2020-09-21 11:04:35,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:04:35,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:35,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:04:35,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:04:35,329 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 8 states. [2020-09-21 11:04:35,709 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:36,882 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:37,227 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:37,568 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:37,866 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:38,243 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:39,071 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2020-09-21 11:04:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:04:39,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-09-21 11:04:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:39,076 INFO L225 Difference]: With dead ends: 478 [2020-09-21 11:04:39,076 INFO L226 Difference]: Without dead ends: 341 [2020-09-21 11:04:39,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:04:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-09-21 11:04:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 277. [2020-09-21 11:04:39,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-21 11:04:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2020-09-21 11:04:39,147 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 73 [2020-09-21 11:04:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:39,148 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2020-09-21 11:04:39,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:04:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2020-09-21 11:04:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 11:04:39,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:39,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:39,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:04:39,150 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:39,151 INFO L82 PathProgramCache]: Analyzing trace with hash 2135215483, now seen corresponding path program 1 times [2020-09-21 11:04:39,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:39,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786201992] [2020-09-21 11:04:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:39,656 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:39,656 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:39,656 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:39,657 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:39,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-21 11:04:39,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-21 11:04:39,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 11:04:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 11:04:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:39,980 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,045 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,045 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,045 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:40,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:04:40,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,087 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,088 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,088 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,095 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,095 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,095 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,096 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:40,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,103 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,103 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:40,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:40,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,111 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,111 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,132 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,132 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,133 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:04:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,151 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,151 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,152 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:04:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:04:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:40,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:40,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:04:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:40,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,182 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,182 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:40,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-21 11:04:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:40,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:40,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 11:04:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:40,197 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:40,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:40,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:40,198 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:40,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:40,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:40,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:40,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:40,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786201992] [2020-09-21 11:04:40,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:40,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:04:40,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130519470] [2020-09-21 11:04:40,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:04:40,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:40,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:04:40,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:04:40,245 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand 9 states. [2020-09-21 11:04:40,705 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:41,803 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:42,094 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:42,441 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:42,773 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:43,095 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:44,019 INFO L93 Difference]: Finished difference Result 380 states and 484 transitions. [2020-09-21 11:04:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:04:44,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-09-21 11:04:44,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:44,024 INFO L225 Difference]: With dead ends: 380 [2020-09-21 11:04:44,024 INFO L226 Difference]: Without dead ends: 377 [2020-09-21 11:04:44,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:04:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-21 11:04:44,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2020-09-21 11:04:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-21 11:04:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 319 transitions. [2020-09-21 11:04:44,106 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 319 transitions. Word has length 77 [2020-09-21 11:04:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:44,106 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 319 transitions. [2020-09-21 11:04:44,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:04:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 319 transitions. [2020-09-21 11:04:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-21 11:04:44,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:44,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:44,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:04:44,109 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:44,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2125508241, now seen corresponding path program 1 times [2020-09-21 11:04:44,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:44,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488095243] [2020-09-21 11:04:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:04:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,453 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,461 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,461 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,461 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,461 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,487 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,487 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,488 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,492 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,496 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,497 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,497 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,497 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,501 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,501 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,502 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:44,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,512 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:44,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:04:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,531 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,531 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,531 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:04:44,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:04:44,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:04:44,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:04:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:04:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,575 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,576 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,576 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:44,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:04:44,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:04:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,603 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,604 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,604 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,604 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:44,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,609 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:04:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,615 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,615 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,615 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,615 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:44,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:04:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,620 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,620 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:44,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488095243] [2020-09-21 11:04:44,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:44,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:04:44,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548123753] [2020-09-21 11:04:44,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:04:44,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:44,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:04:44,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:04:44,635 INFO L87 Difference]: Start difference. First operand 277 states and 319 transitions. Second operand 9 states. [2020-09-21 11:04:45,478 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:45,782 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:46,114 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:46,427 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:47,350 INFO L93 Difference]: Finished difference Result 634 states and 793 transitions. [2020-09-21 11:04:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:04:47,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-09-21 11:04:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:47,357 INFO L225 Difference]: With dead ends: 634 [2020-09-21 11:04:47,357 INFO L226 Difference]: Without dead ends: 381 [2020-09-21 11:04:47,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:04:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-09-21 11:04:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 287. [2020-09-21 11:04:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-09-21 11:04:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 329 transitions. [2020-09-21 11:04:47,426 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 329 transitions. Word has length 78 [2020-09-21 11:04:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:47,426 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 329 transitions. [2020-09-21 11:04:47,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:04:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 329 transitions. [2020-09-21 11:04:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-21 11:04:47,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:47,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:47,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:04:47,428 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:47,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:47,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1616035151, now seen corresponding path program 1 times [2020-09-21 11:04:47,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:47,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923464508] [2020-09-21 11:04:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,476 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:04:47,476 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -49 [2020-09-21 11:04:47,476 FATAL L256 erpolLogProxyWrapper]: Difference in width: 49 [2020-09-21 11:04:47,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 11:04:47,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:04:47,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 11:04:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:47,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,716 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:47,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,727 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,727 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,763 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,763 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,764 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:47,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,769 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,769 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,769 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:47,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:47,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:47,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:47,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:04:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:04:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:04:47,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:04:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,832 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,833 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,833 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:47,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:04:47,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:04:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,857 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,858 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,858 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:47,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:47,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:04:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,873 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,874 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,874 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:47,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:04:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,880 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,880 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,880 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,880 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:47,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:04:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:47,885 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:47,886 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:47,886 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:47,886 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:47,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:47,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:47,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923464508] [2020-09-21 11:04:47,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:47,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:04:47,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003180254] [2020-09-21 11:04:47,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:04:47,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:47,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:04:47,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:04:47,933 INFO L87 Difference]: Start difference. First operand 287 states and 329 transitions. Second operand 8 states. [2020-09-21 11:04:48,790 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:49,026 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:49,309 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:50,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:50,173 INFO L93 Difference]: Finished difference Result 652 states and 825 transitions. [2020-09-21 11:04:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:04:50,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-09-21 11:04:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:50,176 INFO L225 Difference]: With dead ends: 652 [2020-09-21 11:04:50,177 INFO L226 Difference]: Without dead ends: 389 [2020-09-21 11:04:50,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:04:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-09-21 11:04:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 295. [2020-09-21 11:04:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-21 11:04:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2020-09-21 11:04:50,240 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 78 [2020-09-21 11:04:50,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:50,241 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2020-09-21 11:04:50,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:04:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2020-09-21 11:04:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-21 11:04:50,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:50,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:50,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:04:50,243 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:50,244 INFO L82 PathProgramCache]: Analyzing trace with hash -394068690, now seen corresponding path program 1 times [2020-09-21 11:04:50,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:50,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699803581] [2020-09-21 11:04:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,533 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,533 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,533 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 11:04:50,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-21 11:04:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:04:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 11:04:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,803 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:50,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,867 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 11:04:50,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,902 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,902 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,902 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,908 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,908 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,908 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:50,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:50,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,913 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,913 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,914 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,914 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:50,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,919 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,919 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,919 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,919 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:50,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,936 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,936 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:50,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:04:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,954 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,954 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:04:50,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:50,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:04:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:04:50,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:50,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,977 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,977 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,977 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,977 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:50,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:50,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:04:50,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:50,994 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:50,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:50,995 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:50,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:50,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:50,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:04:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,010 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,011 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,011 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:51,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:51,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:04:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,016 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,016 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,017 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:51,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:04:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,021 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,021 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,021 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,022 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:51,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:51,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:51,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699803581] [2020-09-21 11:04:51,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:51,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:04:51,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632832224] [2020-09-21 11:04:51,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:04:51,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:51,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:04:51,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:04:51,036 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand 7 states. [2020-09-21 11:04:51,415 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:52,023 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:53,824 INFO L93 Difference]: Finished difference Result 941 states and 1221 transitions. [2020-09-21 11:04:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:04:53,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-09-21 11:04:53,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:53,834 INFO L225 Difference]: With dead ends: 941 [2020-09-21 11:04:53,834 INFO L226 Difference]: Without dead ends: 670 [2020-09-21 11:04:53,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:04:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-21 11:04:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 571. [2020-09-21 11:04:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-09-21 11:04:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 679 transitions. [2020-09-21 11:04:54,016 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 679 transitions. Word has length 78 [2020-09-21 11:04:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:54,017 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 679 transitions. [2020-09-21 11:04:54,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:04:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 679 transitions. [2020-09-21 11:04:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 11:04:54,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:54,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:54,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:04:54,023 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:54,024 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-09-21 11:04:54,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:54,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319504366] [2020-09-21 11:04:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:04:54,100 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:04:54,100 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:04:54,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:04:54,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:04:54 BoogieIcfgContainer [2020-09-21 11:04:54,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:04:54,148 INFO L168 Benchmark]: Toolchain (without parser) took 30882.41 ms. Allocated memory was 140.0 MB in the beginning and 654.8 MB in the end (delta: 514.9 MB). Free memory was 101.3 MB in the beginning and 342.2 MB in the end (delta: -241.0 MB). Peak memory consumption was 273.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:04:54,153 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:04:54,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.73 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 169.0 MB in the end (delta: -68.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:04:54,160 INFO L168 Benchmark]: Boogie Preprocessor took 100.18 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 165.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:04:54,162 INFO L168 Benchmark]: RCFGBuilder took 1170.56 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 165.1 MB in the beginning and 196.4 MB in the end (delta: -31.3 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:04:54,163 INFO L168 Benchmark]: TraceAbstraction took 28883.17 ms. Allocated memory was 237.0 MB in the beginning and 654.8 MB in the end (delta: 417.9 MB). Free memory was 196.4 MB in the beginning and 342.2 MB in the end (delta: -145.8 MB). Peak memory consumption was 272.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:04:54,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.73 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 169.0 MB in the end (delta: -68.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.18 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 165.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1170.56 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 165.1 MB in the beginning and 196.4 MB in the end (delta: -31.3 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28883.17 ms. Allocated memory was 237.0 MB in the beginning and 654.8 MB in the end (delta: 417.9 MB). Free memory was 196.4 MB in the beginning and 342.2 MB in the end (delta: -145.8 MB). Peak memory consumption was 272.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 858 SDtfs, 1526 SDslu, 706 SDs, 0 SdLazy, 3332 SolverSat, 911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 568 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 174156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...