/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:08:33,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:08:33,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:08:33,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:08:33,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:08:33,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:08:33,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:08:33,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:08:33,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:08:33,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:08:33,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:08:33,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:08:33,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:08:33,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:08:33,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:08:33,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:08:33,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:08:33,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:08:33,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:08:33,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:08:33,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:08:33,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:08:33,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:08:33,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:08:33,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:08:33,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:08:33,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:08:33,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:08:33,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:08:33,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:08:33,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:08:33,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:08:33,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:08:33,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:08:33,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:08:33,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:08:33,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:08:33,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:08:33,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:08:33,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:08:33,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:08:33,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:08:33,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:08:33,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:08:33,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:08:33,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:08:33,352 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:08:33,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:08:33,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:08:33,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:08:33,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:08:33,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:08:33,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:08:33,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:08:33,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:08:33,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:08:33,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:08:33,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:08:33,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:08:33,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:08:33,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:08:33,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:08:33,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:08:33,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:08:33,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:08:33,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:08:33,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:08:33,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:08:33,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:08:33,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:08:33,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:08:33,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:08:33,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:08:33,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:08:33,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:08:33,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:08:33,662 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:08:33,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-21 21:08:33,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a574527e3/b81de074d2f94e54911dff0f51d37009/FLAG07377231e [2020-08-21 21:08:34,256 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:08:34,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-21 21:08:34,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a574527e3/b81de074d2f94e54911dff0f51d37009/FLAG07377231e [2020-08-21 21:08:34,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a574527e3/b81de074d2f94e54911dff0f51d37009 [2020-08-21 21:08:34,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:08:34,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:08:34,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:08:34,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:08:34,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:08:34,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:08:34" (1/1) ... [2020-08-21 21:08:34,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c9b9fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:34, skipping insertion in model container [2020-08-21 21:08:34,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:08:34" (1/1) ... [2020-08-21 21:08:34,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:08:34,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:08:35,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:08:35,102 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:08:35,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:08:35,230 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:08:35,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35 WrapperNode [2020-08-21 21:08:35,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:08:35,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:08:35,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:08:35,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:08:35,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... [2020-08-21 21:08:35,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... [2020-08-21 21:08:35,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... [2020-08-21 21:08:35,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... [2020-08-21 21:08:35,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... [2020-08-21 21:08:35,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... [2020-08-21 21:08:35,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... [2020-08-21 21:08:35,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:08:35,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:08:35,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:08:35,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:08:35,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:08:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:08:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:08:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:08:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:08:35,416 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:08:35,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:08:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:08:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:08:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:08:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:08:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:08:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:08:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:08:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:08:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:08:35,420 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:08:35,420 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:08:35,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:08:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:08:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:08:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:08:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:08:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:08:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:08:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:08:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:08:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:08:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:08:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:08:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:08:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:08:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:08:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:08:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:08:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:08:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:08:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:08:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:08:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:08:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:08:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:08:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:08:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:08:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:08:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:08:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:08:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:08:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:08:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:08:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:08:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:08:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:08:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:08:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:08:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:08:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:08:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:08:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:08:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:08:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:08:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:08:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:08:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:08:35,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:08:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:08:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:08:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:08:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:08:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:08:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:08:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:08:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:08:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:08:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:08:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:08:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:08:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:08:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:08:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:08:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:08:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:08:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:08:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:08:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:08:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:08:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:08:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:08:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:08:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:08:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:08:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:08:36,619 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:08:36,620 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:08:36,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:08:36 BoogieIcfgContainer [2020-08-21 21:08:36,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:08:36,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:08:36,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:08:36,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:08:36,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:08:34" (1/3) ... [2020-08-21 21:08:36,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bde187f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:08:36, skipping insertion in model container [2020-08-21 21:08:36,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:35" (2/3) ... [2020-08-21 21:08:36,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bde187f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:08:36, skipping insertion in model container [2020-08-21 21:08:36,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:08:36" (3/3) ... [2020-08-21 21:08:36,634 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-08-21 21:08:36,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:08:36,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:08:36,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:08:36,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:08:36,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:08:36,694 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:08:36,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:08:36,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:08:36,695 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:08:36,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:08:36,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:08:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-21 21:08:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 21:08:36,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:36,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:08:36,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:36,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:36,742 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-08-21 21:08:36,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:36,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971138540] [2020-08-21 21:08:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,443 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:08:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:08:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:37,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971138540] [2020-08-21 21:08:37,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:37,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:08:37,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667187731] [2020-08-21 21:08:37,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:08:37,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:37,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:08:37,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:08:37,608 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-21 21:08:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:08:38,895 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-21 21:08:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:08:38,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 21:08:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:08:38,911 INFO L225 Difference]: With dead ends: 338 [2020-08-21 21:08:38,912 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 21:08:38,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:08:38,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 21:08:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-21 21:08:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-21 21:08:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-08-21 21:08:39,022 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-08-21 21:08:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:08:39,022 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-08-21 21:08:39,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:08:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-08-21 21:08:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 21:08:39,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:39,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:08:39,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:08:39,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-08-21 21:08:39,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:39,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501892591] [2020-08-21 21:08:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,423 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:39,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:08:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:08:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:39,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501892591] [2020-08-21 21:08:39,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:39,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:08:39,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251203015] [2020-08-21 21:08:39,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:08:39,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:39,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:08:39,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:08:39,474 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-08-21 21:08:39,888 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:08:40,891 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-21 21:08:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:08:40,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 21:08:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:08:40,895 INFO L225 Difference]: With dead ends: 267 [2020-08-21 21:08:40,896 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 21:08:40,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:08:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 21:08:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 21:08:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 21:08:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-21 21:08:40,991 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-08-21 21:08:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:08:40,991 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-21 21:08:40,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:08:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-21 21:08:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:08:41,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:41,003 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] [2020-08-21 21:08:41,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:08:41,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:41,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-08-21 21:08:41,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:41,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278182405] [2020-08-21 21:08:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,359 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:08:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:08:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:41,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278182405] [2020-08-21 21:08:41,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:41,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:08:41,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753995236] [2020-08-21 21:08:41,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:08:41,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:41,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:08:41,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:08:41,481 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-08-21 21:08:41,849 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:08:42,162 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:42,405 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:42,624 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:08:43,953 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-08-21 21:08:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:08:43,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 21:08:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:08:43,962 INFO L225 Difference]: With dead ends: 280 [2020-08-21 21:08:43,963 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 21:08:43,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:08:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 21:08:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 21:08:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 21:08:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-08-21 21:08:44,016 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-08-21 21:08:44,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:08:44,017 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-08-21 21:08:44,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:08:44,017 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-08-21 21:08:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 21:08:44,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:44,019 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] [2020-08-21 21:08:44,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:08:44,019 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-08-21 21:08:44,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:44,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456405883] [2020-08-21 21:08:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,326 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:08:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:08:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:08:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:44,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456405883] [2020-08-21 21:08:44,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:44,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:08:44,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143109267] [2020-08-21 21:08:44,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:08:44,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:44,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:08:44,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:08:44,418 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-08-21 21:08:44,730 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:08:45,851 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:08:46,615 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-08-21 21:08:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:08:46,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-21 21:08:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:08:46,621 INFO L225 Difference]: With dead ends: 383 [2020-08-21 21:08:46,621 INFO L226 Difference]: Without dead ends: 269 [2020-08-21 21:08:46,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:08:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-21 21:08:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-21 21:08:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-21 21:08:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-08-21 21:08:46,693 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-08-21 21:08:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:08:46,693 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-08-21 21:08:46,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:08:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-08-21 21:08:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 21:08:46,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:46,695 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] [2020-08-21 21:08:46,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:08:46,695 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:46,695 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-08-21 21:08:46,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:46,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533183594] [2020-08-21 21:08:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,006 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:47,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:08:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:08:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:08:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:08:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:08:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:47,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533183594] [2020-08-21 21:08:47,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:47,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:08:47,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082564966] [2020-08-21 21:08:47,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:08:47,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:47,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:08:47,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:08:47,189 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 10 states. [2020-08-21 21:08:47,733 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:47,992 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:48,247 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:48,871 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:49,106 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:49,336 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:08:50,465 INFO L93 Difference]: Finished difference Result 472 states and 571 transitions. [2020-08-21 21:08:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:08:50,466 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-21 21:08:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:08:50,469 INFO L225 Difference]: With dead ends: 472 [2020-08-21 21:08:50,470 INFO L226 Difference]: Without dead ends: 270 [2020-08-21 21:08:50,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:08:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-21 21:08:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 230. [2020-08-21 21:08:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-21 21:08:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2020-08-21 21:08:50,520 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 84 [2020-08-21 21:08:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:08:50,520 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2020-08-21 21:08:50,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:08:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2020-08-21 21:08:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 21:08:50,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:50,522 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] [2020-08-21 21:08:50,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:08:50,522 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-08-21 21:08:50,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:50,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115011700] [2020-08-21 21:08:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,809 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:08:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:08:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:08:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:08:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:08:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:50,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115011700] [2020-08-21 21:08:50,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:50,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:08:50,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689150583] [2020-08-21 21:08:50,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:08:50,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:50,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:08:50,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:08:50,926 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand 8 states. [2020-08-21 21:08:51,302 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:08:52,471 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:52,732 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:52,964 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:53,208 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:08:53,482 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:08:54,729 INFO L93 Difference]: Finished difference Result 688 states and 836 transitions. [2020-08-21 21:08:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:08:54,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 21:08:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:08:54,733 INFO L225 Difference]: With dead ends: 688 [2020-08-21 21:08:54,734 INFO L226 Difference]: Without dead ends: 482 [2020-08-21 21:08:54,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:08:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-21 21:08:54,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 415. [2020-08-21 21:08:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-21 21:08:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 470 transitions. [2020-08-21 21:08:54,816 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 470 transitions. Word has length 84 [2020-08-21 21:08:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:08:54,816 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 470 transitions. [2020-08-21 21:08:54,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:08:54,817 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 470 transitions. [2020-08-21 21:08:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 21:08:54,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:54,818 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] [2020-08-21 21:08:54,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:08:54,819 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:54,819 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-08-21 21:08:54,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:54,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068131608] [2020-08-21 21:08:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,075 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:08:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:08:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:08:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:08:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:08:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 21:08:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:55,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068131608] [2020-08-21 21:08:55,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:55,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:08:55,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838980639] [2020-08-21 21:08:55,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:08:55,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:55,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:08:55,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:08:55,223 INFO L87 Difference]: Start difference. First operand 415 states and 470 transitions. Second operand 9 states. [2020-08-21 21:08:55,562 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:08:56,646 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:56,859 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:08:57,108 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:57,354 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:08:57,603 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:08:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:08:58,582 INFO L93 Difference]: Finished difference Result 524 states and 650 transitions. [2020-08-21 21:08:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:08:58,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 21:08:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:08:58,588 INFO L225 Difference]: With dead ends: 524 [2020-08-21 21:08:58,589 INFO L226 Difference]: Without dead ends: 521 [2020-08-21 21:08:58,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:08:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-08-21 21:08:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 415. [2020-08-21 21:08:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-21 21:08:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 469 transitions. [2020-08-21 21:08:58,676 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 469 transitions. Word has length 88 [2020-08-21 21:08:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:08:58,677 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 469 transitions. [2020-08-21 21:08:58,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:08:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 469 transitions. [2020-08-21 21:08:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 21:08:58,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:08:58,679 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, 1] [2020-08-21 21:08:58,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:08:58,679 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:08:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:08:58,680 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-08-21 21:08:58,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:08:58,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352248538] [2020-08-21 21:08:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:08:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,926 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:08:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:08:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:08:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:08:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:08:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:08:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:08:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:08:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:58,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:59,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:08:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:59,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:08:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:59,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:08:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 21:08:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 21:08:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:08:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:08:59,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352248538] [2020-08-21 21:08:59,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:08:59,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:08:59,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991478500] [2020-08-21 21:08:59,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:08:59,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:08:59,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:08:59,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:08:59,095 INFO L87 Difference]: Start difference. First operand 415 states and 469 transitions. Second operand 9 states. [2020-08-21 21:09:00,059 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:00,310 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:09:00,604 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:00,838 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:02,029 INFO L93 Difference]: Finished difference Result 916 states and 1112 transitions. [2020-08-21 21:09:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:09:02,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-21 21:09:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:02,034 INFO L225 Difference]: With dead ends: 916 [2020-08-21 21:09:02,035 INFO L226 Difference]: Without dead ends: 525 [2020-08-21 21:09:02,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:09:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-08-21 21:09:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-08-21 21:09:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-21 21:09:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-08-21 21:09:02,122 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-08-21 21:09:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:02,123 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-08-21 21:09:02,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:09:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-08-21 21:09:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 21:09:02,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:02,125 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, 1] [2020-08-21 21:09:02,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:09:02,125 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:02,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-08-21 21:09:02,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:02,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125088975] [2020-08-21 21:09:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,422 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:02,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:09:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:09:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 21:09:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 21:09:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:09:02,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125088975] [2020-08-21 21:09:02,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:02,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:09:02,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050143592] [2020-08-21 21:09:02,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:09:02,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:02,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:09:02,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:09:02,549 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 7 states. [2020-08-21 21:09:02,862 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:03,346 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:05,702 INFO L93 Difference]: Finished difference Result 1286 states and 1638 transitions. [2020-08-21 21:09:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:09:05,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-08-21 21:09:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:05,711 INFO L225 Difference]: With dead ends: 1286 [2020-08-21 21:09:05,711 INFO L226 Difference]: Without dead ends: 885 [2020-08-21 21:09:05,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:09:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-21 21:09:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-08-21 21:09:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-21 21:09:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 897 transitions. [2020-08-21 21:09:05,872 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 897 transitions. Word has length 89 [2020-08-21 21:09:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:05,873 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 897 transitions. [2020-08-21 21:09:05,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:09:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 897 transitions. [2020-08-21 21:09:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 21:09:05,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:05,877 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, 1, 1, 1, 1, 1] [2020-08-21 21:09:05,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:09:05,877 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-08-21 21:09:05,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:05,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118457003] [2020-08-21 21:09:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:09:05,936 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:09:05,936 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:09:05,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:09:05,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:09:05 BoogieIcfgContainer [2020-08-21 21:09:05,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:09:05,981 INFO L168 Benchmark]: Toolchain (without parser) took 31408.27 ms. Allocated memory was 139.5 MB in the beginning and 619.2 MB in the end (delta: 479.7 MB). Free memory was 101.8 MB in the beginning and 185.4 MB in the end (delta: -83.6 MB). Peak memory consumption was 396.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:05,982 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 21:09:05,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.79 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 169.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:05,990 INFO L168 Benchmark]: Boogie Preprocessor took 95.12 ms. Allocated memory is still 202.4 MB. Free memory was 169.3 MB in the beginning and 165.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:05,991 INFO L168 Benchmark]: RCFGBuilder took 1298.08 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.5 MB in the beginning and 192.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:05,992 INFO L168 Benchmark]: TraceAbstraction took 29350.37 ms. Allocated memory was 235.4 MB in the beginning and 619.2 MB in the end (delta: 383.8 MB). Free memory was 192.9 MB in the beginning and 185.4 MB in the end (delta: 7.5 MB). Peak memory consumption was 391.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:06,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 658.79 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 169.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.12 ms. Allocated memory is still 202.4 MB. Free memory was 169.3 MB in the beginning and 165.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1298.08 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.5 MB in the beginning and 192.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29350.37 ms. Allocated memory was 235.4 MB in the beginning and 619.2 MB in the end (delta: 383.8 MB). Free memory was 192.9 MB in the beginning and 185.4 MB in the end (delta: 7.5 MB). Peak memory consumption was 391.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 [L155] COND TRUE 1 [L157] COND TRUE splverifierCounter < 4 [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) [L167] CALL waterRise() [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 [L167] RET waterRise() [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) [L177] CALL changeMethaneLevel() [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 [L177] RET changeMethaneLevel() [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) [L200] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(\read(pumpRunning)) [L336] CALL processEnvironment__wrappee__lowWaterSensor() [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L310] CALL processEnvironment__wrappee__highWaterSensor() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L969] int retValue_acc ; [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L346] pumpRunning = 1 [L275] RET activatePump() [L310] RET processEnvironment__wrappee__highWaterSensor() [L336] RET processEnvironment__wrappee__lowWaterSensor() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification1_spec__1() [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isMethaneLevelCritical() [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); [L502] RET, EXPR isMethaneLevelCritical() [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L506] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L506] RET, EXPR isPumpRunning() [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) [L510] CALL __automaton_fail() [L216] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1219 SDtfs, 2058 SDslu, 1102 SDs, 0 SdLazy, 5497 SolverSat, 1364 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred 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: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 567 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 742 NumberOfCodeBlocks, 742 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 202853 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...