/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:14:14,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:14:14,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:14:15,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:14:15,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:14:15,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:14:15,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:14:15,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:14:15,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:14:15,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:14:15,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:14:15,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:14:15,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:14:15,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:14:15,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:14:15,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:14:15,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:14:15,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:14:15,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:14:15,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:14:15,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:14:15,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:14:15,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:14:15,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:14:15,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:14:15,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:14:15,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:14:15,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:14:15,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:14:15,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:14:15,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:14:15,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:14:15,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:14:15,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:14:15,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:14:15,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:14:15,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:14:15,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:14:15,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:14:15,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:14:15,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:14:15,037 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 [2020-08-21 21:14:15,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:14:15,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:14:15,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:14:15,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:14:15,069 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:14:15,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:14:15,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:14:15,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:14:15,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:14:15,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:14:15,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:14:15,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:14:15,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:14:15,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:14:15,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:14:15,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:14:15,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:14:15,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:14:15,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:14:15,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:14:15,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:14:15,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:14:15,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:14:15,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:14:15,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:14:15,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:14:15,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:14:15,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:14:15,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:14:15,077 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 -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:14:15,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:14:15,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:14:15,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:14:15,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:14:15,452 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:14:15,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-21 21:14:15,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bbd7d9f/6b2b71e6afd6421fa138f68331ac1f36/FLAGf1a87f8ed [2020-08-21 21:14:16,076 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:14:16,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-21 21:14:16,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bbd7d9f/6b2b71e6afd6421fa138f68331ac1f36/FLAGf1a87f8ed [2020-08-21 21:14:16,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bbd7d9f/6b2b71e6afd6421fa138f68331ac1f36 [2020-08-21 21:14:16,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:14:16,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:14:16,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:14:16,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:14:16,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:14:16,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:14:16" (1/1) ... [2020-08-21 21:14:16,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:16, skipping insertion in model container [2020-08-21 21:14:16,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:14:16" (1/1) ... [2020-08-21 21:14:16,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:14:16,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:14:16,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:14:16,945 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:14:17,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:14:17,057 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:14:17,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17 WrapperNode [2020-08-21 21:14:17,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:14:17,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:14:17,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:14:17,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:14:17,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... [2020-08-21 21:14:17,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... [2020-08-21 21:14:17,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... [2020-08-21 21:14:17,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... [2020-08-21 21:14:17,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... [2020-08-21 21:14:17,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... [2020-08-21 21:14:17,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... [2020-08-21 21:14:17,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:14:17,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:14:17,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:14:17,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:14:17,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:14:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:14:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:14:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:14:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:14:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:14:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:14:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:14:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:14:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:14:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:14:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:14:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:14:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:14:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:14:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:14:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:14:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:14:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:14:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:14:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:14:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:14:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:14:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:14:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:14:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:14:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:14:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:14:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:14:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:14:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:14:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:14:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:14:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:14:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:14:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:14:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:14:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:14:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 21:14:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:14:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:14:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:14:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:14:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:14:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:14:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:14:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:14:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:14:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:14:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:14:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:14:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:14:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:14:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:14:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:14:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:14:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:14:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:14:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:14:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 21:14:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:14:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:14:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:14:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:14:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:14:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:14:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:14:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:14:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:14:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:14:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:14:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:14:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:14:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:14:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:14:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:14:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:14:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:14:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:14:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:14:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:14:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:14:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:14:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:14:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:14:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:14:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:14:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:14:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:14:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:14:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:14:18,424 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:14:18,424 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:14:18,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:14:18 BoogieIcfgContainer [2020-08-21 21:14:18,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:14:18,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:14:18,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:14:18,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:14:18,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:14:16" (1/3) ... [2020-08-21 21:14:18,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cc9ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:14:18, skipping insertion in model container [2020-08-21 21:14:18,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:14:17" (2/3) ... [2020-08-21 21:14:18,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cc9ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:14:18, skipping insertion in model container [2020-08-21 21:14:18,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:14:18" (3/3) ... [2020-08-21 21:14:18,446 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-08-21 21:14:18,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:14:18,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:14:18,479 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:14:18,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:14:18,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:14:18,501 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:14:18,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:14:18,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:14:18,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:14:18,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:14:18,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:14:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 21:14:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 21:14:18,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:18,535 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] [2020-08-21 21:14:18,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:18,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1144967718, now seen corresponding path program 1 times [2020-08-21 21:14:18,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:18,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562421516] [2020-08-21 21:14:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,165 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:19,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:14:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:14:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:14:19,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562421516] [2020-08-21 21:14:19,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:14:19,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:14:19,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510308331] [2020-08-21 21:14:19,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:14:19,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:19,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:14:19,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:14:19,302 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-21 21:14:20,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:20,453 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2020-08-21 21:14:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:14:20,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 21:14:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:20,470 INFO L225 Difference]: With dead ends: 293 [2020-08-21 21:14:20,470 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 21:14:20,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:14:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 21:14:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-21 21:14:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 21:14:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-21 21:14:20,561 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-21 21:14:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:20,561 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-21 21:14:20,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:14:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-21 21:14:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 21:14:20,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:20,565 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] [2020-08-21 21:14:20,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:14:20,566 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:20,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:20,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1860542733, now seen corresponding path program 1 times [2020-08-21 21:14:20,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:20,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626113977] [2020-08-21 21:14:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,873 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:14:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:14:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:14:20,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626113977] [2020-08-21 21:14:20,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:14:20,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:14:20,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649816465] [2020-08-21 21:14:20,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:14:20,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:20,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:14:20,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:14:20,937 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-21 21:14:21,378 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:22,139 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2020-08-21 21:14:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:14:22,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 21:14:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:22,151 INFO L225 Difference]: With dead ends: 226 [2020-08-21 21:14:22,151 INFO L226 Difference]: Without dead ends: 142 [2020-08-21 21:14:22,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:14:22,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-21 21:14:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-21 21:14:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 21:14:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-21 21:14:22,193 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-21 21:14:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:22,193 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-21 21:14:22,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:14:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-21 21:14:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:14:22,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:22,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:22,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:14:22,196 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1943742618, now seen corresponding path program 1 times [2020-08-21 21:14:22,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:22,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121383710] [2020-08-21 21:14:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,564 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:14:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:14:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:14:22,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121383710] [2020-08-21 21:14:22,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:14:22,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:14:22,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458590563] [2020-08-21 21:14:22,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:14:22,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:22,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:14:22,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:14:22,706 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-21 21:14:23,107 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:23,383 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:23,617 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:23,864 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:24,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:24,893 INFO L93 Difference]: Finished difference Result 235 states and 287 transitions. [2020-08-21 21:14:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:14:24,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 21:14:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:24,895 INFO L225 Difference]: With dead ends: 235 [2020-08-21 21:14:24,896 INFO L226 Difference]: Without dead ends: 142 [2020-08-21 21:14:24,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:14:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-21 21:14:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-21 21:14:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 21:14:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-08-21 21:14:24,953 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 51 [2020-08-21 21:14:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:24,954 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-08-21 21:14:24,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:14:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-08-21 21:14:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 21:14:24,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:24,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:24,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:14:24,957 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1699182139, now seen corresponding path program 1 times [2020-08-21 21:14:24,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:24,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050495534] [2020-08-21 21:14:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,226 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:14:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:14:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:14:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:14:25,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050495534] [2020-08-21 21:14:25,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:14:25,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:14:25,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944136521] [2020-08-21 21:14:25,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:14:25,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:14:25,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:14:25,359 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 6 states. [2020-08-21 21:14:25,681 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:26,810 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:27,443 INFO L93 Difference]: Finished difference Result 327 states and 403 transitions. [2020-08-21 21:14:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:14:27,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 21:14:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:27,448 INFO L225 Difference]: With dead ends: 327 [2020-08-21 21:14:27,448 INFO L226 Difference]: Without dead ends: 234 [2020-08-21 21:14:27,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:14:27,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-21 21:14:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-21 21:14:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-21 21:14:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 219 transitions. [2020-08-21 21:14:27,513 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 219 transitions. Word has length 64 [2020-08-21 21:14:27,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:27,513 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 219 transitions. [2020-08-21 21:14:27,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:14:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 219 transitions. [2020-08-21 21:14:27,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 21:14:27,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:27,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:27,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:14:27,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:27,517 INFO L82 PathProgramCache]: Analyzing trace with hash 906371281, now seen corresponding path program 1 times [2020-08-21 21:14:27,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:27,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636427611] [2020-08-21 21:14:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,821 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:14:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:14:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 21:14:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:14:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:14:27,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636427611] [2020-08-21 21:14:27,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:14:27,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:14:27,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504909275] [2020-08-21 21:14:27,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:14:27,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:27,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:14:27,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:14:27,990 INFO L87 Difference]: Start difference. First operand 193 states and 219 transitions. Second operand 12 states. [2020-08-21 21:14:28,421 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:28,737 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:29,013 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:29,240 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:29,721 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:30,595 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:30,875 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:31,121 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:31,361 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:31,656 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:31,960 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:33,214 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:33,576 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:34,130 INFO L93 Difference]: Finished difference Result 671 states and 870 transitions. [2020-08-21 21:14:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 21:14:34,133 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-21 21:14:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:34,138 INFO L225 Difference]: With dead ends: 671 [2020-08-21 21:14:34,138 INFO L226 Difference]: Without dead ends: 502 [2020-08-21 21:14:34,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 21:14:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-21 21:14:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 444. [2020-08-21 21:14:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-08-21 21:14:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 523 transitions. [2020-08-21 21:14:34,248 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 523 transitions. Word has length 78 [2020-08-21 21:14:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:34,248 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 523 transitions. [2020-08-21 21:14:34,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:14:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 523 transitions. [2020-08-21 21:14:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 21:14:34,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:34,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:34,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:14:34,254 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:34,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:34,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1573115002, now seen corresponding path program 1 times [2020-08-21 21:14:34,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:34,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375564757] [2020-08-21 21:14:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,506 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:14:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:14:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:14:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:14:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:14:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 21:14:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:14:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 21:14:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 21:14:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 21:14:34,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375564757] [2020-08-21 21:14:34,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:14:34,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 21:14:34,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224313430] [2020-08-21 21:14:34,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 21:14:34,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:34,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 21:14:34,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:14:34,754 INFO L87 Difference]: Start difference. First operand 444 states and 523 transitions. Second operand 13 states. [2020-08-21 21:14:35,306 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:35,918 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:36,424 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:36,659 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 21:14:36,925 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:37,206 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:37,443 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:37,701 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 21:14:37,977 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:38,257 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:39,689 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:39,922 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:14:40,149 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:40,386 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:40,803 INFO L93 Difference]: Finished difference Result 898 states and 1145 transitions. [2020-08-21 21:14:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 21:14:40,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 21:14:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:40,808 INFO L225 Difference]: With dead ends: 898 [2020-08-21 21:14:40,809 INFO L226 Difference]: Without dead ends: 478 [2020-08-21 21:14:40,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 21:14:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-21 21:14:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 416. [2020-08-21 21:14:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 21:14:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 494 transitions. [2020-08-21 21:14:40,894 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 494 transitions. Word has length 130 [2020-08-21 21:14:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:40,894 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 494 transitions. [2020-08-21 21:14:40,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 21:14:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 494 transitions. [2020-08-21 21:14:40,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 21:14:40,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:40,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:40,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:14:40,898 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:40,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:40,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1101814222, now seen corresponding path program 1 times [2020-08-21 21:14:40,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:40,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634285417] [2020-08-21 21:14:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,141 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:41,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:14:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:14:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:14:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 21:14:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:14:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:14:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 21:14:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 21:14:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 21:14:41,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634285417] [2020-08-21 21:14:41,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:14:41,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 21:14:41,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8651107] [2020-08-21 21:14:41,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:14:41,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:14:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:14:41,381 INFO L87 Difference]: Start difference. First operand 416 states and 494 transitions. Second operand 12 states. [2020-08-21 21:14:42,728 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:42,957 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:43,166 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:43,729 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:43,953 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:44,168 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:45,145 INFO L93 Difference]: Finished difference Result 757 states and 931 transitions. [2020-08-21 21:14:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:14:45,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-21 21:14:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:45,149 INFO L225 Difference]: With dead ends: 757 [2020-08-21 21:14:45,150 INFO L226 Difference]: Without dead ends: 365 [2020-08-21 21:14:45,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:14:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-08-21 21:14:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 341. [2020-08-21 21:14:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-21 21:14:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 402 transitions. [2020-08-21 21:14:45,215 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 402 transitions. Word has length 126 [2020-08-21 21:14:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:45,215 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 402 transitions. [2020-08-21 21:14:45,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:14:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 402 transitions. [2020-08-21 21:14:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 21:14:45,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:45,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:45,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:14:45,218 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2074968439, now seen corresponding path program 1 times [2020-08-21 21:14:45,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:45,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760490136] [2020-08-21 21:14:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,558 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:14:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:14:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:14:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:14:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:14:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 21:14:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:14:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 21:14:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 21:14:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 21:14:45,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760490136] [2020-08-21 21:14:45,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:14:45,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 21:14:45,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32633869] [2020-08-21 21:14:45,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 21:14:45,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:45,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 21:14:45,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:14:45,841 INFO L87 Difference]: Start difference. First operand 341 states and 402 transitions. Second operand 13 states. [2020-08-21 21:14:46,969 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:47,680 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:49,386 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:49,660 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:49,913 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:50,159 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:50,422 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:50,688 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:50,928 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:51,178 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:51,455 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:51,702 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:52,290 INFO L93 Difference]: Finished difference Result 954 states and 1168 transitions. [2020-08-21 21:14:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 21:14:52,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 21:14:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:52,300 INFO L225 Difference]: With dead ends: 954 [2020-08-21 21:14:52,300 INFO L226 Difference]: Without dead ends: 637 [2020-08-21 21:14:52,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-21 21:14:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-08-21 21:14:52,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 598. [2020-08-21 21:14:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-21 21:14:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 696 transitions. [2020-08-21 21:14:52,410 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 696 transitions. Word has length 130 [2020-08-21 21:14:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:52,411 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 696 transitions. [2020-08-21 21:14:52,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 21:14:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 696 transitions. [2020-08-21 21:14:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 21:14:52,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:52,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:52,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:14:52,415 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:52,415 INFO L82 PathProgramCache]: Analyzing trace with hash 106896037, now seen corresponding path program 1 times [2020-08-21 21:14:52,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:52,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559171760] [2020-08-21 21:14:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,720 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:14:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:14:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:14:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:14:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:14:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 21:14:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 21:14:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:14:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 21:14:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 21:14:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 21:14:52,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559171760] [2020-08-21 21:14:52,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:14:52,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 21:14:52,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051707609] [2020-08-21 21:14:52,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:14:52,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:52,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:14:52,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:14:52,939 INFO L87 Difference]: Start difference. First operand 598 states and 696 transitions. Second operand 11 states. [2020-08-21 21:14:53,392 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:55,006 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:55,246 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:55,507 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:55,757 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:14:55,986 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:14:56,288 INFO L93 Difference]: Finished difference Result 703 states and 873 transitions. [2020-08-21 21:14:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 21:14:56,289 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-21 21:14:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:14:56,295 INFO L225 Difference]: With dead ends: 703 [2020-08-21 21:14:56,296 INFO L226 Difference]: Without dead ends: 700 [2020-08-21 21:14:56,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-21 21:14:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-08-21 21:14:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 598. [2020-08-21 21:14:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-21 21:14:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 694 transitions. [2020-08-21 21:14:56,452 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 694 transitions. Word has length 134 [2020-08-21 21:14:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:14:56,454 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 694 transitions. [2020-08-21 21:14:56,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:14:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 694 transitions. [2020-08-21 21:14:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 21:14:56,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:14:56,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:14:56,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:14:56,458 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:14:56,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:14:56,458 INFO L82 PathProgramCache]: Analyzing trace with hash -355706806, now seen corresponding path program 1 times [2020-08-21 21:14:56,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:14:56,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152888252] [2020-08-21 21:14:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:14:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,765 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:14:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:14:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:14:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:14:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:14:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:14:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:14:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:14:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:14:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:14:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:14:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 21:14:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:14:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:14:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:14:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 21:14:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 21:14:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:14:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 21:14:56,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152888252] [2020-08-21 21:14:56,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:14:56,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 21:14:56,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929980065] [2020-08-21 21:14:56,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:14:56,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:14:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:14:56,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:14:56,954 INFO L87 Difference]: Start difference. First operand 598 states and 694 transitions. Second operand 12 states. [2020-08-21 21:14:57,829 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:14:58,607 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:14:59,150 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:14:59,408 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:59,637 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:14:59,875 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:15:00,143 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:15:00,395 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:15:01,837 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:15:02,099 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:15:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:15:02,700 INFO L93 Difference]: Finished difference Result 1409 states and 1754 transitions. [2020-08-21 21:15:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 21:15:02,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-21 21:15:02,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:15:02,711 INFO L225 Difference]: With dead ends: 1409 [2020-08-21 21:15:02,711 INFO L226 Difference]: Without dead ends: 953 [2020-08-21 21:15:02,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 21:15:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-08-21 21:15:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 811. [2020-08-21 21:15:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-21 21:15:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 956 transitions. [2020-08-21 21:15:02,866 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 956 transitions. Word has length 134 [2020-08-21 21:15:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:15:02,866 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 956 transitions. [2020-08-21 21:15:02,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:15:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 956 transitions. [2020-08-21 21:15:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-21 21:15:02,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:15:02,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:15:02,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:15:02,872 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:15:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:15:02,872 INFO L82 PathProgramCache]: Analyzing trace with hash -775865217, now seen corresponding path program 2 times [2020-08-21 21:15:02,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:15:02,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295007906] [2020-08-21 21:15:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:15:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:15:02,955 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:15:02,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:15:02,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:15:03,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:15:03 BoogieIcfgContainer [2020-08-21 21:15:03,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:15:03,010 INFO L168 Benchmark]: Toolchain (without parser) took 46636.83 ms. Allocated memory was 138.4 MB in the beginning and 660.6 MB in the end (delta: 522.2 MB). Free memory was 99.7 MB in the beginning and 374.6 MB in the end (delta: -274.9 MB). Peak memory consumption was 247.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:15:03,013 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 21:15:03,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.46 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 99.5 MB in the beginning and 166.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:15:03,017 INFO L168 Benchmark]: Boogie Preprocessor took 104.60 ms. Allocated memory is still 199.2 MB. Free memory was 166.4 MB in the beginning and 162.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:15:03,020 INFO L168 Benchmark]: RCFGBuilder took 1271.16 ms. Allocated memory was 199.2 MB in the beginning and 230.7 MB in the end (delta: 31.5 MB). Free memory was 162.4 MB in the beginning and 194.2 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:15:03,023 INFO L168 Benchmark]: TraceAbstraction took 44569.96 ms. Allocated memory was 230.7 MB in the beginning and 660.6 MB in the end (delta: 429.9 MB). Free memory was 194.2 MB in the beginning and 374.6 MB in the end (delta: -180.3 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. [2020-08-21 21:15:03,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.46 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 99.5 MB in the beginning and 166.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.60 ms. Allocated memory is still 199.2 MB. Free memory was 166.4 MB in the beginning and 162.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1271.16 ms. Allocated memory was 199.2 MB in the beginning and 230.7 MB in the end (delta: 31.5 MB). Free memory was 162.4 MB in the beginning and 194.2 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44569.96 ms. Allocated memory was 230.7 MB in the beginning and 660.6 MB in the end (delta: 429.9 MB). Free memory was 194.2 MB in the beginning and 374.6 MB in the end (delta: -180.3 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L407] int retValue_acc ; [L408] int tmp ; [L412] FCALL select_helpers() [L413] FCALL select_features() [L414] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L414] RET, EXPR valid_product() [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) [L418] FCALL setup() [L419] CALL runTest() [L401] CALL test() [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) [L104] CALL waterRise() [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 [L104] RET waterRise() [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND FALSE !(\read(pumpRunning)) [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND FALSE !(\read(pumpRunning)) [L236] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND TRUE ! pumpRunning [L197] CALL, EXPR isHighWaterLevel() [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR isHighWaterSensorDry() [L520] int retValue_acc ; [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); [L321] RET, EXPR isHighWaterSensorDry() [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); [L197] RET, EXPR isHighWaterLevel() [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) [L201] CALL activatePump() [L246] pumpRunning = 1 [L201] RET activatePump() [L236] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 [L910] CALL, EXPR isPumpRunning() [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); [L910] RET, EXPR isPumpRunning() [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) [L914] CALL __automaton_fail() [L434] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 38.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1237 SDtfs, 3056 SDslu, 1638 SDs, 0 SdLazy, 8721 SolverSat, 1967 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 517 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=811occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 550 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1125 NumberOfCodeBlocks, 1125 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 930 ConstructedInterpolants, 0 QuantifiedInterpolants, 339546 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 112/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...