/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:54:23,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:54:23,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:54:23,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:54:23,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:54:23,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:54:23,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:54:23,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:54:23,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:54:23,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:54:23,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:54:23,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:54:23,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:54:23,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:54:23,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:54:23,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:54:23,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:54:23,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:54:23,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:54:23,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:54:23,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:54:23,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:54:23,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:54:23,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:54:23,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:54:23,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:54:23,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:54:23,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:54:23,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:54:23,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:54:23,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:54:23,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:54:23,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:54:23,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:54:23,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:54:23,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:54:23,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:54:23,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:54:23,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:54:23,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:54:23,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:54:23,189 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 17:54:23,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:54:23,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:54:23,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:54:23,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:54:23,213 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:54:23,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:54:23,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:54:23,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:54:23,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:54:23,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:54:23,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:54:23,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:54:23,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:54:23,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:54:23,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:54:23,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:54:23,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:54:23,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:54:23,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:54:23,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:54:23,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:54:23,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:54:23,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:54:23,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:54:23,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:54:23,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:54:23,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:54:23,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:54:23,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:54:23,219 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:54:23,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:54:23,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:54:23,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:54:23,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:54:23,536 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:54:23,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-21 17:54:23,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c544e6d22/6c5928988f564af18e33cba08a58ada5/FLAG2d23a64e1 [2020-08-21 17:54:24,158 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:54:24,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-21 17:54:24,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c544e6d22/6c5928988f564af18e33cba08a58ada5/FLAG2d23a64e1 [2020-08-21 17:54:24,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c544e6d22/6c5928988f564af18e33cba08a58ada5 [2020-08-21 17:54:24,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:54:24,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:54:24,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:24,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:54:24,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:54:24,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:24" (1/1) ... [2020-08-21 17:54:24,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae2094d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:24, skipping insertion in model container [2020-08-21 17:54:24,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:24" (1/1) ... [2020-08-21 17:54:24,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:54:24,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:54:25,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:25,093 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:54:25,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:25,294 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:54:25,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25 WrapperNode [2020-08-21 17:54:25,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:25,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:54:25,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:54:25,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:54:25,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:54:25,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:54:25,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:54:25,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:54:25,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (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 17:54:25,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:54:25,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:54:25,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:54:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:54:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:54:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:54:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:54:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:54:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:54:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:54:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:54:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:54:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:54:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:54:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:54:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:54:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:54:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:54:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:54:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:54:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:54:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:54:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:54:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:54:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:54:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:54:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:54:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:54:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:54:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:54:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:54:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:54:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:54:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:54:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:54:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:54:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:54:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:54:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:54:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:54:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:54:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:54:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:54:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:54:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:54:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:54:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:54:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:54:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:54:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:54:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:54:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:54:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:54:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:54:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:54:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:54:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:54:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:54:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:54:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:54:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:54:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:54:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:54:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:54:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:54:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:54:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:54:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:54:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:54:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:54:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:54:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:54:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:54:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:54:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:54:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:54:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:54:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:54:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:54:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:54:26,555 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:54:26,555 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:54:26,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:26 BoogieIcfgContainer [2020-08-21 17:54:26,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:54:26,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:54:26,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:54:26,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:54:26,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:54:24" (1/3) ... [2020-08-21 17:54:26,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbb845f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:26, skipping insertion in model container [2020-08-21 17:54:26,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (2/3) ... [2020-08-21 17:54:26,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbb845f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:26, skipping insertion in model container [2020-08-21 17:54:26,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:26" (3/3) ... [2020-08-21 17:54:26,569 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-08-21 17:54:26,580 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:54:26,589 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:54:26,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:54:26,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:54:26,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:54:26,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:54:26,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:54:26,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:54:26,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:54:26,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:54:26,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:54:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-21 17:54:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 17:54:26,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:26,661 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 17:54:26,661 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1896668179, now seen corresponding path program 1 times [2020-08-21 17:54:26,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:26,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530448541] [2020-08-21 17:54:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,363 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:27,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:54:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:54:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:27,484 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 17:54:27,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530448541] [2020-08-21 17:54:27,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:27,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:54:27,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844120011] [2020-08-21 17:54:27,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:54:27,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:27,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:54:27,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:27,515 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-21 17:54:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:28,603 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-21 17:54:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:54:28,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 17:54:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:28,620 INFO L225 Difference]: With dead ends: 269 [2020-08-21 17:54:28,620 INFO L226 Difference]: Without dead ends: 146 [2020-08-21 17:54:28,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-21 17:54:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-21 17:54:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 17:54:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-21 17:54:28,738 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-21 17:54:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:28,738 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-21 17:54:28,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:54:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-21 17:54:28,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 17:54:28,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:28,742 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 17:54:28,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:54:28,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:28,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:28,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507007, now seen corresponding path program 1 times [2020-08-21 17:54:28,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:28,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518855256] [2020-08-21 17:54:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,068 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:29,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:54:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,111 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 17:54:29,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518855256] [2020-08-21 17:54:29,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:29,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:54:29,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162807941] [2020-08-21 17:54:29,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:54:29,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:29,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:54:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:54:29,114 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-21 17:54:29,523 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:30,225 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-21 17:54:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:54:30,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 17:54:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:30,229 INFO L225 Difference]: With dead ends: 193 [2020-08-21 17:54:30,229 INFO L226 Difference]: Without dead ends: 130 [2020-08-21 17:54:30,231 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 17:54:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-21 17:54:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-21 17:54:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 17:54:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-21 17:54:30,263 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-21 17:54:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:30,263 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-21 17:54:30,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:54:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-21 17:54:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:54:30,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:30,266 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 17:54:30,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:54:30,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash -421022276, now seen corresponding path program 1 times [2020-08-21 17:54:30,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:30,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110579179] [2020-08-21 17:54:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,597 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:54:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:54:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,721 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 17:54:30,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110579179] [2020-08-21 17:54:30,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:30,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:54:30,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730532834] [2020-08-21 17:54:30,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:54:30,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:30,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:54:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:54:30,725 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-21 17:54:31,115 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:31,415 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:31,686 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:31,943 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:32,700 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:34,039 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-21 17:54:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:54:34,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 17:54:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:34,047 INFO L225 Difference]: With dead ends: 363 [2020-08-21 17:54:34,048 INFO L226 Difference]: Without dead ends: 282 [2020-08-21 17:54:34,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:54:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-21 17:54:34,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-21 17:54:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-21 17:54:34,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-21 17:54:34,120 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-21 17:54:34,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:34,120 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-21 17:54:34,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:54:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-21 17:54:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 17:54:34,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:34,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:34,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:54:34,124 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:34,124 INFO L82 PathProgramCache]: Analyzing trace with hash 498542477, now seen corresponding path program 1 times [2020-08-21 17:54:34,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:34,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904826829] [2020-08-21 17:54:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,415 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:54:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:54:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:54:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,496 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 17:54:34,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904826829] [2020-08-21 17:54:34,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:34,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:54:34,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468465206] [2020-08-21 17:54:34,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:54:34,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:34,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:54:34,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:54:34,499 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 8 states. [2020-08-21 17:54:34,894 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:35,966 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:36,254 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:36,534 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:36,765 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:37,080 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:37,789 INFO L93 Difference]: Finished difference Result 698 states and 907 transitions. [2020-08-21 17:54:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:54:37,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 17:54:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:37,796 INFO L225 Difference]: With dead ends: 698 [2020-08-21 17:54:37,797 INFO L226 Difference]: Without dead ends: 506 [2020-08-21 17:54:37,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:54:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-21 17:54:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 387. [2020-08-21 17:54:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-21 17:54:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2020-08-21 17:54:37,907 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 57 [2020-08-21 17:54:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:37,907 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2020-08-21 17:54:37,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:54:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2020-08-21 17:54:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 17:54:37,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:37,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:37,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:54:37,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:37,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:37,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1390027601, now seen corresponding path program 1 times [2020-08-21 17:54:37,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:37,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191439799] [2020-08-21 17:54:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,177 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:54:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:54:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 17:54:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:38,279 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 17:54:38,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191439799] [2020-08-21 17:54:38,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:38,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:38,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702468630] [2020-08-21 17:54:38,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:38,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:38,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:38,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:38,282 INFO L87 Difference]: Start difference. First operand 387 states and 466 transitions. Second operand 9 states. [2020-08-21 17:54:38,680 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:39,710 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:40,006 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:40,278 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:40,774 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:41,048 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:41,774 INFO L93 Difference]: Finished difference Result 1120 states and 1488 transitions. [2020-08-21 17:54:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:54:41,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-21 17:54:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:41,788 INFO L225 Difference]: With dead ends: 1120 [2020-08-21 17:54:41,788 INFO L226 Difference]: Without dead ends: 757 [2020-08-21 17:54:41,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:54:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-08-21 17:54:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 599. [2020-08-21 17:54:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-21 17:54:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 735 transitions. [2020-08-21 17:54:41,920 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 735 transitions. Word has length 61 [2020-08-21 17:54:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:41,921 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 735 transitions. [2020-08-21 17:54:41,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 735 transitions. [2020-08-21 17:54:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 17:54:41,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:41,924 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 17:54:41,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:54:41,924 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:41,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:41,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1223870708, now seen corresponding path program 1 times [2020-08-21 17:54:41,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:41,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911936658] [2020-08-21 17:54:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,217 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:54:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:54:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,354 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 17:54:42,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911936658] [2020-08-21 17:54:42,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:42,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:42,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177078146] [2020-08-21 17:54:42,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:42,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:42,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:42,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:42,356 INFO L87 Difference]: Start difference. First operand 599 states and 735 transitions. Second operand 9 states. [2020-08-21 17:54:42,931 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:43,763 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:43,993 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:54:44,306 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:44,557 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:54:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:46,156 INFO L93 Difference]: Finished difference Result 2076 states and 2949 transitions. [2020-08-21 17:54:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:54:46,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 17:54:46,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:46,173 INFO L225 Difference]: With dead ends: 2076 [2020-08-21 17:54:46,174 INFO L226 Difference]: Without dead ends: 1501 [2020-08-21 17:54:46,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:54:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-08-21 17:54:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1127. [2020-08-21 17:54:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-21 17:54:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1380 transitions. [2020-08-21 17:54:46,459 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1380 transitions. Word has length 78 [2020-08-21 17:54:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:46,460 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1380 transitions. [2020-08-21 17:54:46,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1380 transitions. [2020-08-21 17:54:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 17:54:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:46,467 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 17:54:46,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:54:46,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:46,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1060992747, now seen corresponding path program 1 times [2020-08-21 17:54:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:46,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552649612] [2020-08-21 17:54:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,719 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:46,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:54:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:54:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,834 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 17:54:46,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552649612] [2020-08-21 17:54:46,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:46,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:46,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278594052] [2020-08-21 17:54:46,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:46,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:46,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:46,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:46,837 INFO L87 Difference]: Start difference. First operand 1127 states and 1380 transitions. Second operand 9 states. [2020-08-21 17:54:47,789 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:48,050 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:54:48,310 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:48,551 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:49,748 INFO L93 Difference]: Finished difference Result 2617 states and 3478 transitions. [2020-08-21 17:54:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:54:49,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 17:54:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:49,765 INFO L225 Difference]: With dead ends: 2617 [2020-08-21 17:54:49,768 INFO L226 Difference]: Without dead ends: 1514 [2020-08-21 17:54:49,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:54:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-08-21 17:54:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1167. [2020-08-21 17:54:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-08-21 17:54:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1420 transitions. [2020-08-21 17:54:50,023 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1420 transitions. Word has length 78 [2020-08-21 17:54:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:50,024 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1420 transitions. [2020-08-21 17:54:50,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1420 transitions. [2020-08-21 17:54:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 17:54:50,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:50,027 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 17:54:50,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:54:50,027 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1570465837, now seen corresponding path program 1 times [2020-08-21 17:54:50,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:50,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118373575] [2020-08-21 17:54:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,307 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:54:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:54:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:50,438 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 17:54:50,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118373575] [2020-08-21 17:54:50,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:50,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:54:50,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138957854] [2020-08-21 17:54:50,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:54:50,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:50,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:54:50,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:54:50,440 INFO L87 Difference]: Start difference. First operand 1167 states and 1420 transitions. Second operand 11 states. [2020-08-21 17:54:51,307 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:51,540 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:51,790 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:52,433 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:52,698 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:52,948 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:54,053 INFO L93 Difference]: Finished difference Result 2323 states and 3044 transitions. [2020-08-21 17:54:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:54:54,054 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-21 17:54:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:54,063 INFO L225 Difference]: With dead ends: 2323 [2020-08-21 17:54:54,064 INFO L226 Difference]: Without dead ends: 1180 [2020-08-21 17:54:54,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:54:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-08-21 17:54:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 949. [2020-08-21 17:54:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-08-21 17:54:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1124 transitions. [2020-08-21 17:54:54,333 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1124 transitions. Word has length 78 [2020-08-21 17:54:54,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:54,333 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1124 transitions. [2020-08-21 17:54:54,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:54:54,334 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1124 transitions. [2020-08-21 17:54:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 17:54:54,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:54,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:54,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:54:54,337 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:54,338 INFO L82 PathProgramCache]: Analyzing trace with hash -341045236, now seen corresponding path program 1 times [2020-08-21 17:54:54,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:54,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382388978] [2020-08-21 17:54:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:54:54,421 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:54:54,421 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:54:54,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:54:54,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:54:54 BoogieIcfgContainer [2020-08-21 17:54:54,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:54:54,479 INFO L168 Benchmark]: Toolchain (without parser) took 29954.89 ms. Allocated memory was 140.5 MB in the beginning and 653.3 MB in the end (delta: 512.8 MB). Free memory was 102.8 MB in the beginning and 436.4 MB in the end (delta: -333.6 MB). Peak memory consumption was 179.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:54,484 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:54:54,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.75 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 172.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:54,495 INFO L168 Benchmark]: Boogie Preprocessor took 89.56 ms. Allocated memory is still 203.9 MB. Free memory was 172.8 MB in the beginning and 168.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:54,496 INFO L168 Benchmark]: RCFGBuilder took 1175.00 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 168.8 MB in the beginning and 198.7 MB in the end (delta: -29.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:54,497 INFO L168 Benchmark]: TraceAbstraction took 27915.27 ms. Allocated memory was 236.5 MB in the beginning and 653.3 MB in the end (delta: 416.8 MB). Free memory was 198.7 MB in the beginning and 436.4 MB in the end (delta: -237.7 MB). Peak memory consumption was 179.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:54,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.75 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 172.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.56 ms. Allocated memory is still 203.9 MB. Free memory was 172.8 MB in the beginning and 168.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1175.00 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 168.8 MB in the beginning and 198.7 MB in the end (delta: -29.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27915.27 ms. Allocated memory was 236.5 MB in the beginning and 653.3 MB in the end (delta: 416.8 MB). Free memory was 198.7 MB in the beginning and 436.4 MB in the end (delta: -237.7 MB). Peak memory consumption was 179.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L528] int retValue_acc ; [L529] int tmp ; [L533] FCALL select_helpers() [L534] FCALL select_features() [L535] CALL, EXPR valid_product() [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] return (retValue_acc); [L535] RET, EXPR valid_product() [L535] tmp = valid_product() [L537] COND TRUE \read(tmp) [L539] FCALL setup() [L540] CALL runTest() [L522] CALL test() [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] splverifierCounter = 0 [L190] COND TRUE 1 [L192] COND TRUE splverifierCounter < 4 [L198] tmp = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp) [L202] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L202] RET waterRise() [L208] tmp___0 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___0) [L212] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L212] RET changeMethaneLevel() [L218] tmp___2 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___2) [L235] CALL timeShift() [L257] COND FALSE !(\read(pumpRunning)) [L264] COND TRUE \read(systemActive) [L266] CALL processEnvironment() [L286] int tmp ; [L289] COND TRUE ! pumpRunning [L291] CALL, EXPR isHighWaterLevel() [L383] int retValue_acc ; [L384] int tmp ; [L385] int tmp___0 ; [L389] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L389] RET, EXPR isHighWaterSensorDry() [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] tmp___0 = 1 [L396] retValue_acc = tmp___0 [L397] return (retValue_acc); [L291] RET, EXPR isHighWaterLevel() [L291] tmp = isHighWaterLevel() [L293] COND TRUE \read(tmp) [L295] CALL activatePump() [L314] pumpRunning = 1 [L295] RET activatePump() [L266] RET processEnvironment() [L272] CALL __utac_acc__Specification1_spec__1() [L152] int tmp ; [L153] int tmp___0 ; [L157] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND TRUE \read(tmp) [L161] CALL, EXPR isPumpRunning() [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] return (retValue_acc); [L161] RET, EXPR isPumpRunning() [L161] tmp___0 = isPumpRunning() [L163] COND TRUE \read(tmp___0) [L165] CALL __automaton_fail() [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 22.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 797 SDtfs, 1497 SDslu, 1042 SDs, 0 SdLazy, 4668 SolverSat, 937 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1167occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1352 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 143632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...