/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 enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_spec4_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:14:11,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:14:11,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:14:11,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:14:11,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:14:11,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:14:11,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:14:11,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:14:11,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:14:11,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:14:11,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:14:11,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:14:11,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:14:11,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:14:11,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:14:11,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:14:11,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:14:11,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:14:11,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:14:11,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:14:11,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:14:11,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:14:11,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:14:11,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:14:11,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:14:11,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:14:11,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:14:11,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:14:11,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:14:11,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:14:11,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:14:11,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:14:11,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:14:11,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:14:11,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:14:11,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:14:11,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:14:11,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:14:11,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:14:11,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:14:11,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:14:11,851 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 12:14:11,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:14:11,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:14:11,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:14:11,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:14:11,904 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:14:11,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:14:11,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:14:11,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:14:11,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:14:11,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:14:11,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:14:11,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:14:11,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:14:11,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:14:11,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:14:11,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:14:11,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:14:11,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:14:11,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:14:11,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:14:11,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:14:11,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:14:11,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:14:11,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:14:11,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:14:11,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:14:11,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:14:11,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:14:11,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:14:11,910 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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:14:12,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:14:12,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:14:12,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:14:12,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:14:12,427 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:14:12,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2020-09-21 12:14:12,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc5982851/d93681e470ac467b97dd0baaa89a1248/FLAG2d333c7d3 [2020-09-21 12:14:13,163 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:14:13,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2020-09-21 12:14:13,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc5982851/d93681e470ac467b97dd0baaa89a1248/FLAG2d333c7d3 [2020-09-21 12:14:13,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc5982851/d93681e470ac467b97dd0baaa89a1248 [2020-09-21 12:14:13,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:14:13,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:14:13,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:14:13,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:14:13,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:14:13,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:14:13" (1/1) ... [2020-09-21 12:14:13,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:13, skipping insertion in model container [2020-09-21 12:14:13,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:14:13" (1/1) ... [2020-09-21 12:14:13,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:14:13,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:14:14,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:14:14,059 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:14:14,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:14:14,174 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:14:14,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14 WrapperNode [2020-09-21 12:14:14,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:14:14,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:14:14,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:14:14,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:14:14,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (1/1) ... [2020-09-21 12:14:14,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (1/1) ... [2020-09-21 12:14:14,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (1/1) ... [2020-09-21 12:14:14,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (1/1) ... [2020-09-21 12:14:14,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (1/1) ... [2020-09-21 12:14:14,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (1/1) ... [2020-09-21 12:14:14,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (1/1) ... [2020-09-21 12:14:14,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:14:14,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:14:14,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:14:14,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:14:14,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (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 12:14:14,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:14:14,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:14:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:14:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:14:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:14:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:14:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:14:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:14:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:14:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:14:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:14:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:14:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:14:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:14:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:14:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:14:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:14:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:14:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:14:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:14:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:14:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:14:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:14:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:14:14,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:14:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:14:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:14:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:14:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:14:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:14:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:14:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:14:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:14:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:14:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:14:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:14:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:14:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:14:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:14:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:14:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:14:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:14:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:14:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:14:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:14:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:14:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:14:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:14:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:14:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:14:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:14:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:14:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:14:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:14:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:14:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:14:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:14:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:14:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:14:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:14:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:14:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:14:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:14:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:14:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:14:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:14:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:14:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:14:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:14:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:14:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:14:15,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:14:15,546 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:14:15,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:14:15 BoogieIcfgContainer [2020-09-21 12:14:15,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:14:15,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:14:15,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:14:15,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:14:15,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:14:13" (1/3) ... [2020-09-21 12:14:15,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d78e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:14:15, skipping insertion in model container [2020-09-21 12:14:15,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:14" (2/3) ... [2020-09-21 12:14:15,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d78e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:14:15, skipping insertion in model container [2020-09-21 12:14:15,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:14:15" (3/3) ... [2020-09-21 12:14:15,562 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product24.cil.c [2020-09-21 12:14:15,574 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:14:15,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:14:15,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:14:15,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:14:15,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:14:15,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:14:15,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:14:15,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:14:15,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:14:15,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:14:15,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:14:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-09-21 12:14:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:14:15,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:15,678 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 12:14:15,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:15,687 INFO L82 PathProgramCache]: Analyzing trace with hash -62573292, now seen corresponding path program 1 times [2020-09-21 12:14:15,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:15,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931280262] [2020-09-21 12:14:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:14:17,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:14:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-09-21 12:14:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:14:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:14:17,523 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:17,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:17,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:14:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:17,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:17,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:17,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:17,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:17,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:17,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:14:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:17,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:17,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:17,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:14:17,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:17,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:14:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:14:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:17,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:17,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:17,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:17,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:17,729 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 12:14:17,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931280262] [2020-09-21 12:14:17,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:17,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:14:17,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787176969] [2020-09-21 12:14:17,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:14:17,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:17,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:14:17,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:14:17,761 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-09-21 12:14:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:18,931 INFO L93 Difference]: Finished difference Result 308 states and 403 transitions. [2020-09-21 12:14:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:14:18,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:14:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:18,951 INFO L225 Difference]: With dead ends: 308 [2020-09-21 12:14:18,951 INFO L226 Difference]: Without dead ends: 167 [2020-09-21 12:14:18,957 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 12:14:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-21 12:14:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-09-21 12:14:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-21 12:14:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-09-21 12:14:19,059 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-09-21 12:14:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:19,059 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-09-21 12:14:19,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:14:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-09-21 12:14:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:14:19,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:19,063 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 12:14:19,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:14:19,064 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:19,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:19,064 INFO L82 PathProgramCache]: Analyzing trace with hash 374870047, now seen corresponding path program 1 times [2020-09-21 12:14:19,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:19,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469570673] [2020-09-21 12:14:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:14:20,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:14:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-09-21 12:14:20,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:14:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:14:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,517 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:20,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:20,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:14:20,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:20,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:20,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:20,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:20,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:20,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:20,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:20,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:14:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:20,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:20,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:14:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:20,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:20,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:20,646 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 12:14:20,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469570673] [2020-09-21 12:14:20,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:20,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:14:20,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625632741] [2020-09-21 12:14:20,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:14:20,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:20,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:14:20,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:14:20,650 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-09-21 12:14:21,177 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:14:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:22,023 INFO L93 Difference]: Finished difference Result 231 states and 282 transitions. [2020-09-21 12:14:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:14:22,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:14:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:22,028 INFO L225 Difference]: With dead ends: 231 [2020-09-21 12:14:22,029 INFO L226 Difference]: Without dead ends: 151 [2020-09-21 12:14:22,032 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 12:14:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-21 12:14:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2020-09-21 12:14:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-21 12:14:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-09-21 12:14:22,088 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-09-21 12:14:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:22,092 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-09-21 12:14:22,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:14:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-09-21 12:14:22,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:14:22,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:22,106 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] [2020-09-21 12:14:22,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:14:22,106 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:22,107 INFO L82 PathProgramCache]: Analyzing trace with hash 727440706, now seen corresponding path program 1 times [2020-09-21 12:14:22,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:22,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316851259] [2020-09-21 12:14:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:14:23,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:14:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:14:23,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:14:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:14:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,571 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:23,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:23,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 12:14:23,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:14:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:23,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:23,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:23,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:23,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:23,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:23,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:23,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:14:23,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:23,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:23,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:14:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:23,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:23,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:23,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:14:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:23,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:23,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:23,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:23,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:23,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:23,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:23,786 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 12:14:23,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316851259] [2020-09-21 12:14:23,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:23,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:14:23,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053766954] [2020-09-21 12:14:23,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:14:23,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:23,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:14:23,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:14:23,788 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 4 states. [2020-09-21 12:14:24,084 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:25,702 INFO L93 Difference]: Finished difference Result 361 states and 445 transitions. [2020-09-21 12:14:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:14:25,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:14:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:25,708 INFO L225 Difference]: With dead ends: 361 [2020-09-21 12:14:25,709 INFO L226 Difference]: Without dead ends: 262 [2020-09-21 12:14:25,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 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 12:14:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-21 12:14:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 212. [2020-09-21 12:14:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-21 12:14:25,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 253 transitions. [2020-09-21 12:14:25,774 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 253 transitions. Word has length 52 [2020-09-21 12:14:25,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:25,775 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 253 transitions. [2020-09-21 12:14:25,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:14:25,775 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 253 transitions. [2020-09-21 12:14:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:14:25,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:25,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:14:25,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:14:25,781 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:25,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1814289492, now seen corresponding path program 1 times [2020-09-21 12:14:25,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:25,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977809943] [2020-09-21 12:14:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:26,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:26,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:14:26,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:14:26,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:14:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:14:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,145 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:27,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-21 12:14:27,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:14:27,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:27,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:27,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:27,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:27,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:27,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:14:27,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:27,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:27,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:27,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:14:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:14:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:27,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:14:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:14:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:27,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:14:27,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:14:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:27,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:14:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:27,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:27,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:27,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:27,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:27,403 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 12:14:27,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977809943] [2020-09-21 12:14:27,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:27,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:14:27,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261599905] [2020-09-21 12:14:27,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:14:27,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:27,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:14:27,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:14:27,406 INFO L87 Difference]: Start difference. First operand 212 states and 253 transitions. Second operand 8 states. [2020-09-21 12:14:27,880 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:29,089 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:14:29,515 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:14:29,871 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:14:30,187 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:30,665 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:31,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:31,673 INFO L93 Difference]: Finished difference Result 659 states and 858 transitions. [2020-09-21 12:14:31,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:14:31,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:14:31,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:31,681 INFO L225 Difference]: With dead ends: 659 [2020-09-21 12:14:31,681 INFO L226 Difference]: Without dead ends: 471 [2020-09-21 12:14:31,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:14:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-21 12:14:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 403. [2020-09-21 12:14:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-21 12:14:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 493 transitions. [2020-09-21 12:14:31,810 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 493 transitions. Word has length 57 [2020-09-21 12:14:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:31,811 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 493 transitions. [2020-09-21 12:14:31,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:14:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 493 transitions. [2020-09-21 12:14:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:14:31,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:31,814 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] [2020-09-21 12:14:31,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:14:31,814 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1791606202, now seen corresponding path program 1 times [2020-09-21 12:14:31,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:31,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372697568] [2020-09-21 12:14:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:31,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:32,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:32,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:14:32,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-21 12:14:32,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:14:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:14:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,162 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:33,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-21 12:14:33,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:14:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:33,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:33,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:33,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:33,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:33,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:33,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:33,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:14:33,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:33,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:33,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:33,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:14:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:33,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:14:33,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:14:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:14:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:14:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:14:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:14:33,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:33,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:14:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:14:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:33,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:14:33,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:14:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:33,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:14:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:33,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:33,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:33,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:33,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:33,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:33,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:33,471 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 12:14:33,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372697568] [2020-09-21 12:14:33,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:33,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:14:33,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210537142] [2020-09-21 12:14:33,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:14:33,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:14:33,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:14:33,474 INFO L87 Difference]: Start difference. First operand 403 states and 493 transitions. Second operand 11 states. [2020-09-21 12:14:33,974 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:34,672 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:35,666 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:14:36,109 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:36,535 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:14:36,878 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:14:37,210 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:37,671 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:38,102 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:14:38,569 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:40,885 INFO L93 Difference]: Finished difference Result 1107 states and 1461 transitions. [2020-09-21 12:14:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 12:14:40,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-21 12:14:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:40,893 INFO L225 Difference]: With dead ends: 1107 [2020-09-21 12:14:40,893 INFO L226 Difference]: Without dead ends: 893 [2020-09-21 12:14:40,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:14:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-21 12:14:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 735. [2020-09-21 12:14:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-09-21 12:14:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 894 transitions. [2020-09-21 12:14:41,074 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 894 transitions. Word has length 61 [2020-09-21 12:14:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:41,075 INFO L479 AbstractCegarLoop]: Abstraction has 735 states and 894 transitions. [2020-09-21 12:14:41,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:14:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 894 transitions. [2020-09-21 12:14:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:14:41,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:41,079 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] [2020-09-21 12:14:41,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:14:41,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash 176933658, now seen corresponding path program 1 times [2020-09-21 12:14:41,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:41,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909780292] [2020-09-21 12:14:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:14:42,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:14:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:14:42,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:14:42,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:14:42,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:14:42,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,425 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:42,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:42,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:14:42,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:42,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:42,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:42,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:42,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:42,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:42,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:42,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:42,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:14:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:14:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:14:42,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:14:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:14:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:42,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:42,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:14:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:42,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:42,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:42,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:14:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:42,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:42,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:42,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:42,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:42,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:42,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:42,592 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 12:14:42,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909780292] [2020-09-21 12:14:42,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:42,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:14:42,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026538077] [2020-09-21 12:14:42,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:14:42,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:42,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:14:42,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:14:42,596 INFO L87 Difference]: Start difference. First operand 735 states and 894 transitions. Second operand 6 states. [2020-09-21 12:14:43,014 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:14:43,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:43,998 INFO L93 Difference]: Finished difference Result 979 states and 1234 transitions. [2020-09-21 12:14:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:14:44,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 12:14:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:44,005 INFO L225 Difference]: With dead ends: 979 [2020-09-21 12:14:44,005 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:14:44,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:14:44,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:14:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:14:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:14:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:14:44,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-21 12:14:44,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:44,010 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:14:44,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:14:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:14:44,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:14:44,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:14:44,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:14:44,575 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 16 [2020-09-21 12:14:44,742 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:44,910 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:45,078 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:45,246 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:45,411 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:45,627 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:45,786 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:45,948 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:46,117 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:46,278 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:46,845 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 207 [2020-09-21 12:14:47,004 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:47,163 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:47,326 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:47,479 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:47,754 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-21 12:14:48,005 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-21 12:14:48,258 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-21 12:14:48,512 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-21 12:14:48,666 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:48,821 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:49,071 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-21 12:14:49,282 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:49,441 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:49,593 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:49,753 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:50,078 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-21 12:14:50,397 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-21 12:14:50,719 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-21 12:14:51,037 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-09-21 12:14:51,359 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-21 12:14:51,500 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:51,673 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:51,831 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:51,996 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:52,163 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:52,321 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:52,475 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:52,628 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:52,785 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:52,942 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:53,100 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:53,255 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:53,412 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:53,571 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:53,728 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:53,895 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:54,049 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:54,208 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:54,379 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:54,531 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:54,689 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:54,846 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:55,236 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 16 [2020-09-21 12:14:55,398 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:55,588 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:55,750 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:55,903 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:56,056 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:56,213 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:56,371 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:56,527 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:56,696 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:56,853 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:57,007 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:57,164 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:57,566 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 16 [2020-09-21 12:14:57,887 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 158 [2020-09-21 12:14:58,043 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:58,202 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:14:58,360 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:58,515 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:58,671 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:14:58,834 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:59,221 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 16 [2020-09-21 12:14:59,378 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:14:59,729 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-09-21 12:15:00,087 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 12:15:00,429 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-09-21 12:15:00,786 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 12:15:01,098 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-21 12:15:01,459 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-21 12:15:01,852 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 12:15:02,014 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:02,177 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:02,330 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:02,483 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:02,641 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:02,806 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:02,988 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:03,141 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:03,298 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:03,451 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:03,608 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:03,765 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:03,926 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:04,093 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:04,202 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-09-21 12:15:04,831 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 18 [2020-09-21 12:15:05,054 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-09-21 12:15:05,349 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 1 [2020-09-21 12:15:05,552 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 25 [2020-09-21 12:15:06,170 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 18 [2020-09-21 12:15:06,862 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 23 [2020-09-21 12:15:07,656 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 18 [2020-09-21 12:15:08,272 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 19 [2020-09-21 12:15:08,539 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:08,817 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-09-21 12:15:09,407 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 23 [2020-09-21 12:15:09,623 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 1 [2020-09-21 12:15:09,858 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-09-21 12:15:10,514 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 19 [2020-09-21 12:15:11,253 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 19 [2020-09-21 12:15:11,454 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 1 [2020-09-21 12:15:11,854 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-09-21 12:15:12,519 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 18