/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:54:47,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:54:47,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:54:47,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:54:47,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:54:47,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:54:47,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:54:47,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:54:47,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:54:47,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:54:47,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:54:47,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:54:47,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:54:47,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:54:47,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:54:47,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:54:47,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:54:47,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:54:47,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:54:47,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:54:47,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:54:47,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:54:47,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:54:47,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:54:47,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:54:47,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:54:47,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:54:47,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:54:47,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:54:47,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:54:47,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:54:47,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:54:47,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:54:47,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:54:47,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:54:47,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:54:47,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:54:47,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:54:47,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:54:47,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:54:47,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:54:47,458 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 11:54:47,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:54:47,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:54:47,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:54:47,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:54:47,497 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:54:47,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:54:47,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:54:47,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:54:47,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:54:47,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:54:47,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:54:47,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:54:47,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:54:47,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:54:47,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:54:47,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:54:47,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:54:47,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:54:47,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:54:47,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:54:47,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:54:47,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:54:47,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:54:47,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:54:47,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:54:47,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:54:47,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:54:47,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:54:47,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:54:47,504 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:54:47,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:54:47,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:54:47,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:54:47,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:54:47,836 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:54:47,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 11:54:47,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2205df1/bde1658ce0e74151a1e176d1af9fc074/FLAG5c895b7a4 [2020-08-18 11:54:48,383 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:54:48,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 11:54:48,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2205df1/bde1658ce0e74151a1e176d1af9fc074/FLAG5c895b7a4 [2020-08-18 11:54:48,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2205df1/bde1658ce0e74151a1e176d1af9fc074 [2020-08-18 11:54:48,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:54:48,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:54:48,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:48,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:54:48,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:54:48,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:48" (1/1) ... [2020-08-18 11:54:48,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:48, skipping insertion in model container [2020-08-18 11:54:48,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:48" (1/1) ... [2020-08-18 11:54:48,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:54:48,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:54:49,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:49,217 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:54:49,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:49,342 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:54:49,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49 WrapperNode [2020-08-18 11:54:49,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:49,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:54:49,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:54:49,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:54:49,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (1/1) ... [2020-08-18 11:54:49,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (1/1) ... [2020-08-18 11:54:49,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (1/1) ... [2020-08-18 11:54:49,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (1/1) ... [2020-08-18 11:54:49,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (1/1) ... [2020-08-18 11:54:49,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (1/1) ... [2020-08-18 11:54:49,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (1/1) ... [2020-08-18 11:54:49,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:54:49,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:54:49,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:54:49,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:54:49,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (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 11:54:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:54:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:54:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:54:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:54:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:54:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:54:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:54:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:54:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:54:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:54:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:54:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:54:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:54:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:54:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:54:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:54:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:54:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:54:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:54:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:54:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:54:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:54:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:54:49,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:54:49,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:54:49,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:54:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:54:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:54:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:54:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:54:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:54:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:54:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:54:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:54:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:54:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:54:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:54:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:54:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:54:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:54:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:54:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:54:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:54:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:54:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:54:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:54:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:54:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:54:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:54:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:54:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:54:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:54:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:54:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:54:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:54:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:54:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:54:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:54:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:54:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:54:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:54:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:54:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:54:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:54:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:54:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:54:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:54:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:54:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:54:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:54:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:54:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:54:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:54:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:54:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:54:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:54:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:54:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:54:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:54:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:54:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:54:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:54:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:54:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:54:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:54:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:54:50,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:54:50,621 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:54:50,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:50 BoogieIcfgContainer [2020-08-18 11:54:50,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:54:50,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:54:50,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:54:50,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:54:50,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:54:48" (1/3) ... [2020-08-18 11:54:50,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be1324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:50, skipping insertion in model container [2020-08-18 11:54:50,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:49" (2/3) ... [2020-08-18 11:54:50,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be1324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:50, skipping insertion in model container [2020-08-18 11:54:50,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:50" (3/3) ... [2020-08-18 11:54:50,642 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-08-18 11:54:50,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:54:50,660 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:54:50,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:54:50,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:54:50,690 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:54:50,690 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:54:50,690 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:54:50,690 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:54:50,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:54:50,691 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:54:50,691 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:54:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-18 11:54:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 11:54:50,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:50,725 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 11:54:50,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:50,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-08-18 11:54:50,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:50,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241859764] [2020-08-18 11:54:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,409 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:54:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,549 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 11:54:51,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241859764] [2020-08-18 11:54:51,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:51,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:54:51,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262689916] [2020-08-18 11:54:51,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:54:51,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:54:51,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:51,595 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-18 11:54:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:52,659 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-18 11:54:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:54:52,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 11:54:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:52,677 INFO L225 Difference]: With dead ends: 306 [2020-08-18 11:54:52,678 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 11:54:52,683 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 11:54:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 11:54:52,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 11:54:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 11:54:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-18 11:54:52,782 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-18 11:54:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:52,806 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-18 11:54:52,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:54:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-18 11:54:52,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 11:54:52,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:52,812 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 11:54:52,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:54:52,812 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:52,813 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-08-18 11:54:52,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:52,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167822304] [2020-08-18 11:54:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,179 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:53,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:54:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:53,221 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 11:54:53,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167822304] [2020-08-18 11:54:53,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:53,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:54:53,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155673159] [2020-08-18 11:54:53,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:54:53,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:53,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:54:53,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:54:53,225 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-18 11:54:53,727 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:54,468 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-18 11:54:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:54:54,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 11:54:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:54,472 INFO L225 Difference]: With dead ends: 235 [2020-08-18 11:54:54,472 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 11:54:54,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:54:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 11:54:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 11:54:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 11:54:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 11:54:54,509 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-18 11:54:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:54,510 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 11:54:54,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:54:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 11:54:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:54:54,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:54,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:54,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:54:54,513 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:54,513 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-08-18 11:54:54,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:54,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060293941] [2020-08-18 11:54:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,813 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:54:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,901 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 11:54:54,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060293941] [2020-08-18 11:54:54,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:54,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:54,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473510504] [2020-08-18 11:54:54,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:54,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:54,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:54,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:54,904 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-18 11:54:55,249 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:55,550 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:55,778 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:55,996 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:57,101 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-18 11:54:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:54:57,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 11:54:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:57,108 INFO L225 Difference]: With dead ends: 248 [2020-08-18 11:54:57,108 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 11:54:57,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:54:57,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 11:54:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 11:54:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 11:54:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-18 11:54:57,173 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-18 11:54:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:57,174 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-18 11:54:57,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-18 11:54:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 11:54:57,176 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:57,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:57,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:54:57,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:57,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-08-18 11:54:57,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:57,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346261520] [2020-08-18 11:54:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,426 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:57,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:54:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:54:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:54:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,539 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 11:54:57,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346261520] [2020-08-18 11:54:57,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:57,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:54:57,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397174905] [2020-08-18 11:54:57,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:54:57,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:57,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:54:57,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:54:57,541 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-18 11:54:57,953 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:59,032 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:59,685 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-18 11:54:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:59,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 11:54:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:59,690 INFO L225 Difference]: With dead ends: 345 [2020-08-18 11:54:59,690 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 11:54:59,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 11:54:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-18 11:54:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-18 11:54:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-18 11:54:59,742 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-18 11:54:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:59,742 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-18 11:54:59,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:54:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-18 11:54:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 11:54:59,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:59,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:59,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:54:59,745 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-08-18 11:54:59,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:59,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743236660] [2020-08-18 11:54:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:59,993 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:55:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:55:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:55:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:00,097 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 11:55:00,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743236660] [2020-08-18 11:55:00,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:00,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:55:00,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966918545] [2020-08-18 11:55:00,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:55:00,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:55:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:55:00,103 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-08-18 11:55:00,463 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:01,537 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:01,787 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:02,020 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:02,254 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:02,530 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:03,565 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-08-18 11:55:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:55:03,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 11:55:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:03,573 INFO L225 Difference]: With dead ends: 607 [2020-08-18 11:55:03,573 INFO L226 Difference]: Without dead ends: 428 [2020-08-18 11:55:03,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:55:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-18 11:55:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-08-18 11:55:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 11:55:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-08-18 11:55:03,666 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-08-18 11:55:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:03,667 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-08-18 11:55:03,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:55:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-08-18 11:55:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:55:03,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:03,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:03,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:55:03,669 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:03,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-08-18 11:55:03,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:03,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523889086] [2020-08-18 11:55:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,919 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:55:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:03,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:55:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:04,017 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 11:55:04,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523889086] [2020-08-18 11:55:04,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:04,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:55:04,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087419779] [2020-08-18 11:55:04,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:55:04,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:04,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:55:04,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:55:04,020 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-08-18 11:55:04,454 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:05,507 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:05,723 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:05,976 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:06,226 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:06,466 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:07,471 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-08-18 11:55:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:55:07,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 11:55:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:07,477 INFO L225 Difference]: With dead ends: 470 [2020-08-18 11:55:07,477 INFO L226 Difference]: Without dead ends: 467 [2020-08-18 11:55:07,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:55:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-08-18 11:55:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-08-18 11:55:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 11:55:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-18 11:55:07,565 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-08-18 11:55:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:07,566 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-18 11:55:07,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:55:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-18 11:55:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:55:07,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:07,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:07,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:55:07,568 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-08-18 11:55:07,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:07,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916271552] [2020-08-18 11:55:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,855 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:55:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:55:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:08,005 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 11:55:08,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916271552] [2020-08-18 11:55:08,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:08,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:55:08,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397162362] [2020-08-18 11:55:08,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:55:08,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:08,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:55:08,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:55:08,014 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-08-18 11:55:08,891 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:09,128 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:55:09,356 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:09,575 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:10,521 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-08-18 11:55:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:55:10,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 11:55:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:10,525 INFO L225 Difference]: With dead ends: 808 [2020-08-18 11:55:10,526 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 11:55:10,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:55:10,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 11:55:10,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-08-18 11:55:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-18 11:55:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-08-18 11:55:10,601 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-08-18 11:55:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:10,601 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-08-18 11:55:10,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:55:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-08-18 11:55:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:55:10,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:10,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:10,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:55:10,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-08-18 11:55:10,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:10,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819217658] [2020-08-18 11:55:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,851 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:55:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:55:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:11,002 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 11:55:11,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819217658] [2020-08-18 11:55:11,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:11,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:55:11,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144580441] [2020-08-18 11:55:11,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:55:11,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:11,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:55:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:55:11,006 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 11 states. [2020-08-18 11:55:11,607 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:11,854 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:12,068 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:12,654 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:12,890 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:13,118 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:14,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:14,187 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-08-18 11:55:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:55:14,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 11:55:14,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:14,194 INFO L225 Difference]: With dead ends: 832 [2020-08-18 11:55:14,194 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 11:55:14,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:55:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 11:55:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-18 11:55:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 11:55:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-08-18 11:55:14,271 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-08-18 11:55:14,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:14,271 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-08-18 11:55:14,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:55:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-08-18 11:55:14,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:55:14,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:14,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:14,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:55:14,274 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:14,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:14,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-08-18 11:55:14,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:14,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593387195] [2020-08-18 11:55:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,499 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:14,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:55:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:55:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:14,615 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 11:55:14,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593387195] [2020-08-18 11:55:14,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:14,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:55:14,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164633369] [2020-08-18 11:55:14,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:55:14,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:14,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:55:14,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:55:14,617 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-08-18 11:55:14,932 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:15,434 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:17,609 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-08-18 11:55:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:55:17,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 11:55:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:17,615 INFO L225 Difference]: With dead ends: 1174 [2020-08-18 11:55:17,615 INFO L226 Difference]: Without dead ends: 819 [2020-08-18 11:55:17,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:55:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-18 11:55:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-08-18 11:55:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-08-18 11:55:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-08-18 11:55:17,761 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-08-18 11:55:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:17,762 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-08-18 11:55:17,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:55:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-08-18 11:55:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 11:55:17,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:17,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:17,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:55:17,767 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:17,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-08-18 11:55:17,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:17,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193279534] [2020-08-18 11:55:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:55:17,826 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:55:17,827 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:55:17,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:55:17,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:55:17 BoogieIcfgContainer [2020-08-18 11:55:17,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:55:17,868 INFO L168 Benchmark]: Toolchain (without parser) took 29139.49 ms. Allocated memory was 143.7 MB in the beginning and 605.6 MB in the end (delta: 461.9 MB). Free memory was 105.4 MB in the beginning and 409.4 MB in the end (delta: -304.0 MB). Peak memory consumption was 157.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:17,869 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:55:17,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.50 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 105.2 MB in the beginning and 172.8 MB in the end (delta: -67.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:17,877 INFO L168 Benchmark]: Boogie Preprocessor took 112.32 ms. Allocated memory is still 205.0 MB. Free memory was 172.8 MB in the beginning and 168.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:17,878 INFO L168 Benchmark]: RCFGBuilder took 1175.82 ms. Allocated memory was 205.0 MB in the beginning and 231.2 MB in the end (delta: 26.2 MB). Free memory was 168.1 MB in the beginning and 184.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:17,879 INFO L168 Benchmark]: TraceAbstraction took 27230.25 ms. Allocated memory was 231.2 MB in the beginning and 605.6 MB in the end (delta: 374.3 MB). Free memory was 183.0 MB in the beginning and 409.4 MB in the end (delta: -226.5 MB). Peak memory consumption was 147.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:55:17,887 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.50 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 105.2 MB in the beginning and 172.8 MB in the end (delta: -67.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.32 ms. Allocated memory is still 205.0 MB. Free memory was 172.8 MB in the beginning and 168.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1175.82 ms. Allocated memory was 205.0 MB in the beginning and 231.2 MB in the end (delta: 26.2 MB). Free memory was 168.1 MB in the beginning and 184.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27230.25 ms. Allocated memory was 231.2 MB in the beginning and 605.6 MB in the end (delta: 374.3 MB). Free memory was 183.0 MB in the beginning and 409.4 MB in the end (delta: -226.5 MB). Peak memory consumption was 147.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1083 SDtfs, 1822 SDslu, 979 SDs, 0 SdLazy, 5126 SolverSat, 1181 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...