/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:27:33,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:27:33,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:27:33,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:27:33,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:27:33,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:27:33,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:27:33,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:27:33,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:27:33,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:27:33,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:27:33,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:27:33,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:27:33,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:27:33,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:27:33,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:27:33,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:27:33,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:27:33,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:27:33,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:27:33,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:27:33,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:27:33,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:27:33,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:27:33,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:27:33,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:27:33,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:27:33,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:27:33,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:27:33,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:27:33,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:27:33,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:27:33,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:27:33,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:27:33,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:27:33,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:27:33,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:27:33,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:27:33,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:27:33,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:27:33,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:27:33,230 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 [2020-08-18 18:27:33,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:27:33,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:27:33,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:27:33,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:27:33,256 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:27:33,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:27:33,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:27:33,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:27:33,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:27:33,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:27:33,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:27:33,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:27:33,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:27:33,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:27:33,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:27:33,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:27:33,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:27:33,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:27:33,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:27:33,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:27:33,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:27:33,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:27:33,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:27:33,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:27:33,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:27:33,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:27:33,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:27:33,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:27:33,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:27:33,261 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=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:27:33,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:27:33,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:27:33,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:27:33,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:27:33,600 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:27:33,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-18 18:27:33,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7cc1c35b/5cc20ecc6ce3490e99db8e4e62a15712/FLAG5c83be41b [2020-08-18 18:27:34,114 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:27:34,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-18 18:27:34,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7cc1c35b/5cc20ecc6ce3490e99db8e4e62a15712/FLAG5c83be41b [2020-08-18 18:27:34,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7cc1c35b/5cc20ecc6ce3490e99db8e4e62a15712 [2020-08-18 18:27:34,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:27:34,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:27:34,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:34,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:27:34,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:27:34,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:34" (1/1) ... [2020-08-18 18:27:34,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ab6a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:34, skipping insertion in model container [2020-08-18 18:27:34,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:34" (1/1) ... [2020-08-18 18:27:34,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:27:34,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:27:34,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:35,018 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:27:35,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:35,161 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:27:35,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35 WrapperNode [2020-08-18 18:27:35,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:35,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:27:35,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:27:35,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:27:35,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (1/1) ... [2020-08-18 18:27:35,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (1/1) ... [2020-08-18 18:27:35,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (1/1) ... [2020-08-18 18:27:35,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (1/1) ... [2020-08-18 18:27:35,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (1/1) ... [2020-08-18 18:27:35,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (1/1) ... [2020-08-18 18:27:35,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (1/1) ... [2020-08-18 18:27:35,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:27:35,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:27:35,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:27:35,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:27:35,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (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 [2020-08-18 18:27:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:27:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:27:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:27:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:27:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:27:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:27:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:27:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:27:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:27:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:27:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:27:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:27:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:27:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:27:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:27:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:27:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:27:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:27:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:27:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 18:27:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:27:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:27:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:27:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:27:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:27:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:27:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:27:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:27:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:27:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:27:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:27:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:27:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:27:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:27:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:27:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:27:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:27:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:27:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:27:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:27:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:27:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:27:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:27:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:27:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:27:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:27:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:27:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:27:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:27:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:27:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 18:27:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:27:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:27:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:27:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 18:27:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:27:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:27:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:27:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:27:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:27:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:27:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:27:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:27:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:27:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:27:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:27:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:27:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:27:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:27:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:27:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:27:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:27:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:27:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:27:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:27:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:27:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:27:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:27:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:27:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:27:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:27:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:27:36,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:27:36,384 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:27:36,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:36 BoogieIcfgContainer [2020-08-18 18:27:36,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:27:36,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:27:36,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:27:36,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:27:36,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:27:34" (1/3) ... [2020-08-18 18:27:36,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2be0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:36, skipping insertion in model container [2020-08-18 18:27:36,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:35" (2/3) ... [2020-08-18 18:27:36,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2be0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:36, skipping insertion in model container [2020-08-18 18:27:36,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:36" (3/3) ... [2020-08-18 18:27:36,398 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-18 18:27:36,410 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:27:36,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:27:36,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:27:36,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:27:36,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:27:36,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:27:36,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:27:36,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:27:36,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:27:36,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:27:36,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:27:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 18:27:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 18:27:36,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:36,495 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] [2020-08-18 18:27:36,495 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-08-18 18:27:36,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:36,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238281591] [2020-08-18 18:27:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,209 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:27:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:37,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238281591] [2020-08-18 18:27:37,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:37,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:27:37,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774847356] [2020-08-18 18:27:37,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:27:37,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:37,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:27:37,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:37,323 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-18 18:27:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:38,522 INFO L93 Difference]: Finished difference Result 295 states and 384 transitions. [2020-08-18 18:27:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:27:38,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 18:27:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:38,539 INFO L225 Difference]: With dead ends: 295 [2020-08-18 18:27:38,539 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 18:27:38,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 18:27:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-08-18 18:27:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 18:27:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 18:27:38,664 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-18 18:27:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:38,665 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 18:27:38,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:27:38,666 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 18:27:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:27:38,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:38,671 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] [2020-08-18 18:27:38,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:27:38,671 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-08-18 18:27:38,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:38,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318323476] [2020-08-18 18:27:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,021 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:39,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:27:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:27:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:39,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318323476] [2020-08-18 18:27:39,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:39,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:27:39,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872975886] [2020-08-18 18:27:39,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:27:39,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:39,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:27:39,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:27:39,064 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-18 18:27:39,468 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:40,238 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-08-18 18:27:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:27:40,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 18:27:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:40,247 INFO L225 Difference]: With dead ends: 219 [2020-08-18 18:27:40,247 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 18:27:40,249 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 [2020-08-18 18:27:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 18:27:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-08-18 18:27:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 18:27:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-18 18:27:40,286 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-18 18:27:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:40,287 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-18 18:27:40,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:27:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-18 18:27:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 18:27:40,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:40,289 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] [2020-08-18 18:27:40,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:27:40,289 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-08-18 18:27:40,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:40,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789850289] [2020-08-18 18:27:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,595 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:27:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:27:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:40,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789850289] [2020-08-18 18:27:40,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:40,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:27:40,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857611201] [2020-08-18 18:27:40,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:27:40,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:40,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:27:40,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:27:40,663 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-18 18:27:41,084 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:41,374 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:41,629 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:41,892 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:42,625 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:44,205 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2020-08-18 18:27:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:27:44,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 18:27:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:44,211 INFO L225 Difference]: With dead ends: 403 [2020-08-18 18:27:44,211 INFO L226 Difference]: Without dead ends: 310 [2020-08-18 18:27:44,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:27:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-18 18:27:44,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-08-18 18:27:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 18:27:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2020-08-18 18:27:44,279 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 51 [2020-08-18 18:27:44,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:44,280 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2020-08-18 18:27:44,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:27:44,280 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2020-08-18 18:27:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 18:27:44,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:44,283 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] [2020-08-18 18:27:44,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:27:44,283 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:44,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-08-18 18:27:44,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:44,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301895238] [2020-08-18 18:27:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,564 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:27:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:27:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:27:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:44,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301895238] [2020-08-18 18:27:44,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:44,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:27:44,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990076107] [2020-08-18 18:27:44,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:27:44,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:44,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:27:44,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:27:44,650 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand 8 states. [2020-08-18 18:27:45,063 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:46,212 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:46,534 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:46,819 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:47,086 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:47,429 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:48,405 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2020-08-18 18:27:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:27:48,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 18:27:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:48,411 INFO L225 Difference]: With dead ends: 778 [2020-08-18 18:27:48,411 INFO L226 Difference]: Without dead ends: 562 [2020-08-18 18:27:48,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:27:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-18 18:27:48,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 435. [2020-08-18 18:27:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 18:27:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 522 transitions. [2020-08-18 18:27:48,524 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 522 transitions. Word has length 57 [2020-08-18 18:27:48,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:48,525 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 522 transitions. [2020-08-18 18:27:48,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:27:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 522 transitions. [2020-08-18 18:27:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 18:27:48,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:48,530 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] [2020-08-18 18:27:48,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:27:48,530 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:48,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-08-18 18:27:48,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:48,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037902623] [2020-08-18 18:27:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,806 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:27:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:27:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:27:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:27:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:48,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037902623] [2020-08-18 18:27:48,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:48,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:27:48,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789700601] [2020-08-18 18:27:48,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:27:48,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:27:48,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:27:48,939 INFO L87 Difference]: Start difference. First operand 435 states and 522 transitions. Second operand 9 states. [2020-08-18 18:27:49,350 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:50,373 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:50,675 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:50,941 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:51,598 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:51,864 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:52,663 INFO L93 Difference]: Finished difference Result 1224 states and 1608 transitions. [2020-08-18 18:27:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:27:52,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 18:27:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:52,671 INFO L225 Difference]: With dead ends: 1224 [2020-08-18 18:27:52,671 INFO L226 Difference]: Without dead ends: 813 [2020-08-18 18:27:52,673 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 [2020-08-18 18:27:52,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-08-18 18:27:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 655. [2020-08-18 18:27:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-18 18:27:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 799 transitions. [2020-08-18 18:27:52,828 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 799 transitions. Word has length 61 [2020-08-18 18:27:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:52,829 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 799 transitions. [2020-08-18 18:27:52,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:27:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 799 transitions. [2020-08-18 18:27:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 18:27:52,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:52,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:52,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:27:52,834 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:52,834 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-08-18 18:27:52,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:52,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721793566] [2020-08-18 18:27:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,131 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:27:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:27:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:27:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:27:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:27:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:27:53,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721793566] [2020-08-18 18:27:53,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:53,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:27:53,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980319834] [2020-08-18 18:27:53,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:27:53,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:53,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:27:53,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:27:53,339 INFO L87 Difference]: Start difference. First operand 655 states and 799 transitions. Second operand 9 states. [2020-08-18 18:27:54,054 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:54,900 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:55,157 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:27:55,430 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:55,697 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:27:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:57,506 INFO L93 Difference]: Finished difference Result 2244 states and 3141 transitions. [2020-08-18 18:27:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:27:57,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 18:27:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:57,522 INFO L225 Difference]: With dead ends: 2244 [2020-08-18 18:27:57,522 INFO L226 Difference]: Without dead ends: 1613 [2020-08-18 18:27:57,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:27:57,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-08-18 18:27:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1239. [2020-08-18 18:27:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-08-18 18:27:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1508 transitions. [2020-08-18 18:27:57,804 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1508 transitions. Word has length 93 [2020-08-18 18:27:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:57,805 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1508 transitions. [2020-08-18 18:27:57,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:27:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1508 transitions. [2020-08-18 18:27:57,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 18:27:57,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:57,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:57,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:27:57,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:57,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1880670433, now seen corresponding path program 1 times [2020-08-18 18:27:57,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:57,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486655539] [2020-08-18 18:27:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,209 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:58,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:27:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:27:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:27:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:27:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:27:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:27:58,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486655539] [2020-08-18 18:27:58,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:58,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:27:58,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838469714] [2020-08-18 18:27:58,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:27:58,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:58,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:27:58,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:27:58,427 INFO L87 Difference]: Start difference. First operand 1239 states and 1508 transitions. Second operand 9 states. [2020-08-18 18:27:59,618 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:59,872 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:28:00,116 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:00,363 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:01,522 INFO L93 Difference]: Finished difference Result 2857 states and 3834 transitions. [2020-08-18 18:28:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:28:01,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 18:28:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:01,535 INFO L225 Difference]: With dead ends: 2857 [2020-08-18 18:28:01,535 INFO L226 Difference]: Without dead ends: 1642 [2020-08-18 18:28:01,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:28:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-08-18 18:28:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1279. [2020-08-18 18:28:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-18 18:28:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1548 transitions. [2020-08-18 18:28:01,895 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1548 transitions. Word has length 93 [2020-08-18 18:28:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:01,896 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1548 transitions. [2020-08-18 18:28:01,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1548 transitions. [2020-08-18 18:28:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 18:28:01,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:01,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:01,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:28:01,903 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1516903585, now seen corresponding path program 1 times [2020-08-18 18:28:01,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:01,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757420459] [2020-08-18 18:28:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,183 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:28:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:28:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:28:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:28:02,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757420459] [2020-08-18 18:28:02,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:02,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 18:28:02,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697655331] [2020-08-18 18:28:02,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:28:02,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:28:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:28:02,332 INFO L87 Difference]: Start difference. First operand 1279 states and 1548 transitions. Second operand 11 states. [2020-08-18 18:28:03,153 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:03,393 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:03,614 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:04,242 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:04,498 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:04,734 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:05,930 INFO L93 Difference]: Finished difference Result 2491 states and 3236 transitions. [2020-08-18 18:28:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:28:05,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 18:28:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:05,945 INFO L225 Difference]: With dead ends: 2491 [2020-08-18 18:28:05,945 INFO L226 Difference]: Without dead ends: 1236 [2020-08-18 18:28:05,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:28:05,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-08-18 18:28:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1005. [2020-08-18 18:28:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-18 18:28:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1188 transitions. [2020-08-18 18:28:06,149 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1188 transitions. Word has length 93 [2020-08-18 18:28:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:06,150 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1188 transitions. [2020-08-18 18:28:06,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:28:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1188 transitions. [2020-08-18 18:28:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 18:28:06,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:06,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:06,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:28:06,155 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1451570632, now seen corresponding path program 1 times [2020-08-18 18:28:06,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:06,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095900776] [2020-08-18 18:28:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,467 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:28:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:28:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:28:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:28:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:28:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:28:06,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095900776] [2020-08-18 18:28:06,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:28:06,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 18:28:06,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453789882] [2020-08-18 18:28:06,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 18:28:06,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:06,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 18:28:06,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 18:28:06,716 INFO L87 Difference]: Start difference. First operand 1005 states and 1188 transitions. Second operand 17 states. [2020-08-18 18:28:07,470 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:07,817 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:08,080 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:08,332 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:28:08,916 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:09,492 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:09,885 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:10,945 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:11,226 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:11,630 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:11,895 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:12,434 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 18:28:12,988 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 18:28:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:14,245 INFO L93 Difference]: Finished difference Result 2201 states and 2748 transitions. [2020-08-18 18:28:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 18:28:14,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-18 18:28:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:14,254 INFO L225 Difference]: With dead ends: 2201 [2020-08-18 18:28:14,254 INFO L226 Difference]: Without dead ends: 1220 [2020-08-18 18:28:14,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 18:28:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-18 18:28:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 983. [2020-08-18 18:28:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-18 18:28:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1139 transitions. [2020-08-18 18:28:14,457 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1139 transitions. Word has length 97 [2020-08-18 18:28:14,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:14,458 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1139 transitions. [2020-08-18 18:28:14,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 18:28:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1139 transitions. [2020-08-18 18:28:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 18:28:14,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:14,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:14,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:28:14,465 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:14,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:14,466 INFO L82 PathProgramCache]: Analyzing trace with hash -914965907, now seen corresponding path program 1 times [2020-08-18 18:28:14,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:14,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708942675] [2020-08-18 18:28:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,762 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:28:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:28:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:28:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 18:28:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 18:28:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 18:28:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 18:28:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 18:28:14,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708942675] [2020-08-18 18:28:14,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:28:14,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 18:28:14,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512409564] [2020-08-18 18:28:14,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:28:14,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:14,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:28:14,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:28:14,977 INFO L87 Difference]: Start difference. First operand 983 states and 1139 transitions. Second operand 9 states. [2020-08-18 18:28:15,925 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:17,508 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:18,231 INFO L93 Difference]: Finished difference Result 2643 states and 3463 transitions. [2020-08-18 18:28:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 18:28:18,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-18 18:28:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:18,244 INFO L225 Difference]: With dead ends: 2643 [2020-08-18 18:28:18,245 INFO L226 Difference]: Without dead ends: 1980 [2020-08-18 18:28:18,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-08-18 18:28:18,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-18 18:28:18,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1593. [2020-08-18 18:28:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-08-18 18:28:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1869 transitions. [2020-08-18 18:28:18,580 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1869 transitions. Word has length 132 [2020-08-18 18:28:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:18,581 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1869 transitions. [2020-08-18 18:28:18,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1869 transitions. [2020-08-18 18:28:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 18:28:18,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:18,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:18,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:28:18,587 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:18,587 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-08-18 18:28:18,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:18,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490881985] [2020-08-18 18:28:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:28:18,671 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:28:18,671 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:28:18,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:28:18,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:28:18 BoogieIcfgContainer [2020-08-18 18:28:18,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:28:18,730 INFO L168 Benchmark]: Toolchain (without parser) took 44250.12 ms. Allocated memory was 139.5 MB in the beginning and 767.6 MB in the end (delta: 628.1 MB). Free memory was 101.1 MB in the beginning and 327.4 MB in the end (delta: -226.2 MB). Peak memory consumption was 401.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,730 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:28:18,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.11 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 169.7 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,732 INFO L168 Benchmark]: Boogie Preprocessor took 102.98 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 165.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,735 INFO L168 Benchmark]: RCFGBuilder took 1123.82 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 165.5 MB in the beginning and 197.0 MB in the end (delta: -31.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,735 INFO L168 Benchmark]: TraceAbstraction took 42329.68 ms. Allocated memory was 234.9 MB in the beginning and 767.6 MB in the end (delta: 532.7 MB). Free memory was 197.0 MB in the beginning and 327.4 MB in the end (delta: -130.4 MB). Peak memory consumption was 402.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,741 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.11 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 169.7 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.98 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 165.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1123.82 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 165.5 MB in the beginning and 197.0 MB in the end (delta: -31.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42329.68 ms. Allocated memory was 234.9 MB in the beginning and 767.6 MB in the end (delta: 532.7 MB). Free memory was 197.0 MB in the beginning and 327.4 MB in the end (delta: -130.4 MB). Peak memory consumption was 402.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: 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; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2978 SDslu, 1540 SDs, 0 SdLazy, 8010 SolverSat, 2016 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 247082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 37/42 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...