/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=WIDEST --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_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:56:53,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:56:53,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:56:53,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:56:53,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:56:53,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:56:53,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:56:53,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:56:53,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:56:53,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:56:53,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:56:53,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:56:53,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:56:53,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:56:53,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:56:53,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:56:53,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:56:53,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:56:53,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:56:53,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:56:53,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:56:53,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:56:53,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:56:53,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:56:53,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:56:53,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:56:53,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:56:53,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:56:53,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:56:53,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:56:53,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:56:53,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:56:53,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:56:53,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:56:53,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:56:53,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:56:53,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:56:53,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:56:53,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:56:53,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:56:53,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:56:53,184 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 21:56:53,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:56:53,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:56:53,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:56:53,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:56:53,212 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:56:53,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:56:53,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:56:53,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:56:53,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:56:53,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:56:53,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:56:53,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:56:53,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:56:53,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:56:53,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:56:53,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:56:53,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:56:53,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:56:53,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:56:53,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:56:53,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:56:53,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:56:53,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:56:53,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:56:53,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:56:53,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:56:53,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:56:53,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:56:53,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:56:53,217 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:56:53,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:56:53,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:56:53,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:56:53,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:56:53,519 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:56:53,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-21 21:56:53,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6268c2546/7edc222ec02b423793c2fa932f4e9f28/FLAG824626c6c [2020-08-21 21:56:54,098 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:56:54,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-21 21:56:54,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6268c2546/7edc222ec02b423793c2fa932f4e9f28/FLAG824626c6c [2020-08-21 21:56:54,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6268c2546/7edc222ec02b423793c2fa932f4e9f28 [2020-08-21 21:56:54,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:56:54,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:56:54,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:56:54,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:56:54,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:56:54,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:56:54" (1/1) ... [2020-08-21 21:56:54,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c9d73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:54, skipping insertion in model container [2020-08-21 21:56:54,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:56:54" (1/1) ... [2020-08-21 21:56:54,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:56:54,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:56:54,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:56:54,898 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:56:54,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:56:55,025 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:56:55,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55 WrapperNode [2020-08-21 21:56:55,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:56:55,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:56:55,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:56:55,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:56:55,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (1/1) ... [2020-08-21 21:56:55,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (1/1) ... [2020-08-21 21:56:55,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (1/1) ... [2020-08-21 21:56:55,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (1/1) ... [2020-08-21 21:56:55,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (1/1) ... [2020-08-21 21:56:55,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (1/1) ... [2020-08-21 21:56:55,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (1/1) ... [2020-08-21 21:56:55,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:56:55,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:56:55,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:56:55,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:56:55,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (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 21:56:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:56:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:56:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:56:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:56:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:56:55,223 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:56:55,224 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:56:55,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:56:55,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:56:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:56:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:56:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:56:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:56:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:56:55,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:56:55,227 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:56:55,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:56:55,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:56:55,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:56:55,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:56:55,228 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:56:55,229 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:56:55,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:56:55,229 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:56:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:56:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:56:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:56:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:56:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:56:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:56:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:56:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:56:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:56:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:56:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:56:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:56:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:56:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:56:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:56:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:56:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:56:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:56:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:56:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:56:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:56:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:56:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:56:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:56:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:56:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:56:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:56:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:56:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:56:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:56:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:56:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:56:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:56:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:56:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:56:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:56:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:56:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:56:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:56:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:56:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:56:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:56:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:56:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:56:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:56:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:56:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:56:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:56:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:56:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:56:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:56:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:56:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:56:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:56:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:56:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:56:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:56:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:56:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:56:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:56:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:56:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:56:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:56:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:56:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:56:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:56:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:56:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:56:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:56:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:56:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:56:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:56:56,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:56:56,401 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:56:56,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:56:56 BoogieIcfgContainer [2020-08-21 21:56:56,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:56:56,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:56:56,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:56:56,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:56:56,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:56:54" (1/3) ... [2020-08-21 21:56:56,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75420857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:56:56, skipping insertion in model container [2020-08-21 21:56:56,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:55" (2/3) ... [2020-08-21 21:56:56,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75420857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:56:56, skipping insertion in model container [2020-08-21 21:56:56,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:56:56" (3/3) ... [2020-08-21 21:56:56,417 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-08-21 21:56:56,429 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:56:56,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:56:56,454 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:56:56,480 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:56:56,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:56:56,480 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:56:56,481 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:56:56,481 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:56:56,481 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:56:56,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:56:56,482 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:56:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-21 21:56:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 21:56:56,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:56,517 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 21:56:56,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:56,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:56,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-08-21 21:56:56,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:56,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031879348] [2020-08-21 21:56:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,168 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:56:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:56:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:57,253 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 21:56:57,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031879348] [2020-08-21 21:56:57,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:57,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:56:57,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666527124] [2020-08-21 21:56:57,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:56:57,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:57,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:56:57,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:56:57,281 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-21 21:56:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:58,545 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-21 21:56:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:56:58,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 21:56:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:58,563 INFO L225 Difference]: With dead ends: 306 [2020-08-21 21:56:58,563 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 21:56:58,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:56:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 21:56:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-21 21:56:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 21:56:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-21 21:56:58,691 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-21 21:56:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:58,692 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-21 21:56:58,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:56:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-21 21:56:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 21:56:58,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:58,700 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 21:56:58,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:56:58,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:58,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:58,701 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-08-21 21:56:58,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:58,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172536544] [2020-08-21 21:56:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,095 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:59,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:56:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:56:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:59,175 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 21:56:59,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172536544] [2020-08-21 21:56:59,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:59,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:56:59,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700010913] [2020-08-21 21:56:59,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:56:59,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:59,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:56:59,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:56:59,180 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-21 21:56:59,638 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:00,571 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-21 21:57:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:57:00,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 21:57:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:00,574 INFO L225 Difference]: With dead ends: 235 [2020-08-21 21:57:00,575 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 21:57:00,576 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 21:57:00,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 21:57:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 21:57:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 21:57:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-21 21:57:00,616 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-21 21:57:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:00,616 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-21 21:57:00,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:57:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-21 21:57:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:57:00,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:00,619 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 21:57:00,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:57:00,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-08-21 21:57:00,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:00,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16237364] [2020-08-21 21:57:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:00,974 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:00,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:01,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:01,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:57:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:57:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:01,084 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 21:57:01,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16237364] [2020-08-21 21:57:01,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:01,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:57:01,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382476658] [2020-08-21 21:57:01,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:57:01,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:01,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:57:01,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:57:01,087 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-21 21:57:01,471 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:01,800 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:02,081 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:02,324 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:03,563 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-21 21:57:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:57:03,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 21:57:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:03,567 INFO L225 Difference]: With dead ends: 248 [2020-08-21 21:57:03,567 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 21:57:03,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:57:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 21:57:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 21:57:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 21:57:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-21 21:57:03,606 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-21 21:57:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:03,606 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-21 21:57:03,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:57:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-21 21:57:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 21:57:03,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:03,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:03,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:57:03,609 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:03,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-08-21 21:57:03,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:03,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200103918] [2020-08-21 21:57:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:03,883 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:03,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:03,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:03,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:57:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:04,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 21:57:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:04,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 21:57:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:04,032 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 21:57:04,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200103918] [2020-08-21 21:57:04,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:04,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:57:04,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228580856] [2020-08-21 21:57:04,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:57:04,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:04,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:57:04,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:57:04,037 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-21 21:57:04,399 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:05,551 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:06,210 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-21 21:57:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:57:06,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 21:57:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:06,216 INFO L225 Difference]: With dead ends: 345 [2020-08-21 21:57:06,217 INFO L226 Difference]: Without dead ends: 246 [2020-08-21 21:57:06,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:57:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-21 21:57:06,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-21 21:57:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-21 21:57:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-21 21:57:06,273 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-21 21:57:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:06,273 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-21 21:57:06,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:57:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-21 21:57:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 21:57:06,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:06,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:06,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:57:06,277 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:06,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-08-21 21:57:06,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:06,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069518792] [2020-08-21 21:57:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,569 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:57:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 21:57:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 21:57:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:06,687 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 21:57:06,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069518792] [2020-08-21 21:57:06,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:06,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:57:06,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671526405] [2020-08-21 21:57:06,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:57:06,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:06,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:57:06,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:57:06,690 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-08-21 21:57:07,066 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:08,178 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:08,426 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:08,656 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:08,865 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:09,144 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:10,208 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-08-21 21:57:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:57:10,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-21 21:57:10,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:10,217 INFO L225 Difference]: With dead ends: 607 [2020-08-21 21:57:10,217 INFO L226 Difference]: Without dead ends: 428 [2020-08-21 21:57:10,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:57:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-21 21:57:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-08-21 21:57:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-21 21:57:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-08-21 21:57:10,309 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-08-21 21:57:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:10,310 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-08-21 21:57:10,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:57:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-08-21 21:57:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:57:10,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:10,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:57:10,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:57:10,312 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:10,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:10,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-08-21 21:57:10,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:10,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977385360] [2020-08-21 21:57:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,579 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:10,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:57:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 21:57:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 21:57:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:10,744 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 21:57:10,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977385360] [2020-08-21 21:57:10,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:10,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:57:10,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642963648] [2020-08-21 21:57:10,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:57:10,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:10,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:57:10,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:57:10,748 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-08-21 21:57:11,264 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:12,370 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:12,601 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:12,874 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:13,115 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:13,350 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:14,378 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-08-21 21:57:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:57:14,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 21:57:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:14,383 INFO L225 Difference]: With dead ends: 470 [2020-08-21 21:57:14,383 INFO L226 Difference]: Without dead ends: 467 [2020-08-21 21:57:14,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:57:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-08-21 21:57:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-08-21 21:57:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-21 21:57:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-21 21:57:14,452 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-08-21 21:57:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:14,452 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-21 21:57:14,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:57:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-21 21:57:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 21:57:14,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:14,454 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 21:57:14,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:57:14,455 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:14,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-08-21 21:57:14,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:14,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116586491] [2020-08-21 21:57:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,678 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:57:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:57:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:57:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:14,843 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 21:57:14,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116586491] [2020-08-21 21:57:14,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:14,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:57:14,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213334426] [2020-08-21 21:57:14,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:57:14,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:14,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:57:14,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:57:14,852 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-08-21 21:57:15,747 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:16,001 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:57:16,282 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:16,511 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:17,493 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-08-21 21:57:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:57:17,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 21:57:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:17,498 INFO L225 Difference]: With dead ends: 808 [2020-08-21 21:57:17,499 INFO L226 Difference]: Without dead ends: 471 [2020-08-21 21:57:17,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:57:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-21 21:57:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-08-21 21:57:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-21 21:57:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-08-21 21:57:17,574 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-08-21 21:57:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:17,575 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-08-21 21:57:17,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:57:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-08-21 21:57:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 21:57:17,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:17,577 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 21:57:17,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:57:17,577 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:17,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-08-21 21:57:17,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:17,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591853023] [2020-08-21 21:57:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,843 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:17,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:57:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:57:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:57:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:17,975 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 21:57:17,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591853023] [2020-08-21 21:57:17,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:17,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:57:17,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297535026] [2020-08-21 21:57:17,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:57:17,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:57:17,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:57:17,978 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 11 states. [2020-08-21 21:57:18,518 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:57:18,743 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:18,960 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:19,570 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:19,859 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:20,100 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:57:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:21,258 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-08-21 21:57:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:57:21,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-21 21:57:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:21,267 INFO L225 Difference]: With dead ends: 832 [2020-08-21 21:57:21,268 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 21:57:21,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:57:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 21:57:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-21 21:57:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 21:57:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-08-21 21:57:21,368 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-08-21 21:57:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:21,369 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-08-21 21:57:21,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:57:21,369 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-08-21 21:57:21,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 21:57:21,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:21,373 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 21:57:21,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:57:21,373 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:21,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:21,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-08-21 21:57:21,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:21,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061894974] [2020-08-21 21:57:21,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,661 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:57:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:57:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:57:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:57:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:57:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:57:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:57:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:57:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:57:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:57:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:57:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:57:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:57:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:57:21,817 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 21:57:21,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061894974] [2020-08-21 21:57:21,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:57:21,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:57:21,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808390426] [2020-08-21 21:57:21,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:57:21,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:57:21,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:57:21,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:57:21,820 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-08-21 21:57:22,171 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:22,654 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:57:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:57:24,772 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-08-21 21:57:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:57:24,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-21 21:57:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:57:24,778 INFO L225 Difference]: With dead ends: 1174 [2020-08-21 21:57:24,779 INFO L226 Difference]: Without dead ends: 819 [2020-08-21 21:57:24,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:57:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-21 21:57:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-08-21 21:57:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-08-21 21:57:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-08-21 21:57:25,002 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-08-21 21:57:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:57:25,004 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-08-21 21:57:25,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:57:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-08-21 21:57:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 21:57:25,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:57:25,010 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 21:57:25,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:57:25,010 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:57:25,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:57:25,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-08-21 21:57:25,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:57:25,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490714468] [2020-08-21 21:57:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:57:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:57:25,094 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:57:25,094 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:57:25,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:57:25,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:57:25 BoogieIcfgContainer [2020-08-21 21:57:25,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:57:25,153 INFO L168 Benchmark]: Toolchain (without parser) took 30773.47 ms. Allocated memory was 139.5 MB in the beginning and 619.2 MB in the end (delta: 479.7 MB). Free memory was 101.7 MB in the beginning and 297.1 MB in the end (delta: -195.4 MB). Peak memory consumption was 284.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:57:25,154 INFO L168 Benchmark]: CDTParser took 0.26 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 21:57:25,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 650.22 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 172.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-21 21:57:25,164 INFO L168 Benchmark]: Boogie Preprocessor took 120.93 ms. Allocated memory is still 202.9 MB. Free memory was 172.4 MB in the beginning and 166.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:57:25,165 INFO L168 Benchmark]: RCFGBuilder took 1258.60 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.1 MB in the beginning and 195.5 MB in the end (delta: -29.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:57:25,168 INFO L168 Benchmark]: TraceAbstraction took 28738.82 ms. Allocated memory was 236.5 MB in the beginning and 619.2 MB in the end (delta: 382.7 MB). Free memory was 195.5 MB in the beginning and 297.1 MB in the end (delta: -101.6 MB). Peak memory consumption was 281.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:57:25,177 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 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 650.22 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 172.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.93 ms. Allocated memory is still 202.9 MB. Free memory was 172.4 MB in the beginning and 166.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1258.60 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.1 MB in the beginning and 195.5 MB in the end (delta: -29.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28738.82 ms. Allocated memory was 236.5 MB in the beginning and 619.2 MB in the end (delta: 382.7 MB). Free memory was 195.5 MB in the beginning and 297.1 MB in the end (delta: -101.6 MB). Peak memory consumption was 281.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1087 SDtfs, 1822 SDslu, 988 SDs, 0 SdLazy, 5120 SolverSat, 1182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...