/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:10:21,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:10:21,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:10:21,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:10:21,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:10:21,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:10:21,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:10:21,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:10:21,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:10:21,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:10:21,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:10:21,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:10:21,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:10:21,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:10:21,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:10:21,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:10:21,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:10:21,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:10:21,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:10:21,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:10:21,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:10:21,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:10:21,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:10:21,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:10:21,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:10:21,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:10:21,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:10:21,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:10:21,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:10:21,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:10:21,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:10:21,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:10:21,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:10:21,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:10:21,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:10:21,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:10:21,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:10:21,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:10:21,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:10:21,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:10:21,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:10:21,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:10:21,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:10:21,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:10:21,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:10:21,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:10:21,235 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:10:21,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:10:21,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:10:21,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:10:21,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:10:21,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:10:21,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:10:21,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:10:21,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:10:21,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:10:21,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:10:21,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:10:21,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:10:21,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:10:21,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:10:21,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:10:21,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:10:21,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:10:21,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:10:21,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:10:21,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:10:21,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:10:21,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:10:21,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:10:21,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:10:21,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:10:21,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:10:21,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:10:21,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:10:21,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:10:21,568 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:10:21,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-18 20:10:21,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73b807a81/1422619522bf49968d39adfefc00b36e/FLAGf8b96a8e5 [2020-08-18 20:10:22,119 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:10:22,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-18 20:10:22,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73b807a81/1422619522bf49968d39adfefc00b36e/FLAGf8b96a8e5 [2020-08-18 20:10:22,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73b807a81/1422619522bf49968d39adfefc00b36e [2020-08-18 20:10:22,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:10:22,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:10:22,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:10:22,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:10:22,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:10:22,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:10:22" (1/1) ... [2020-08-18 20:10:22,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6452952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:22, skipping insertion in model container [2020-08-18 20:10:22,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:10:22" (1/1) ... [2020-08-18 20:10:22,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:10:22,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:10:22,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:10:22,956 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:10:23,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:10:23,129 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:10:23,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23 WrapperNode [2020-08-18 20:10:23,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:10:23,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:10:23,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:10:23,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:10:23,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... [2020-08-18 20:10:23,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... [2020-08-18 20:10:23,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... [2020-08-18 20:10:23,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... [2020-08-18 20:10:23,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... [2020-08-18 20:10:23,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... [2020-08-18 20:10:23,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... [2020-08-18 20:10:23,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:10:23,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:10:23,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:10:23,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:10:23,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:10:23,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:10:23,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:10:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:10:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:10:23,301 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:10:23,302 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:10:23,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:10:23,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:10:23,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:10:23,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:10:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:10:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:10:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:10:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:10:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:10:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:10:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:10:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:10:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:10:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:10:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:10:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:10:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:10:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:10:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:10:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:10:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:10:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:10:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:10:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:10:23,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:10:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:10:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:10:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:10:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:10:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:10:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:10:23,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:10:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:10:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:10:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:10:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:10:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:10:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:10:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:10:23,313 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:10:23,313 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:10:23,313 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:10:23,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:10:23,313 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:10:23,314 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:10:23,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:10:23,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:10:23,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:10:23,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:10:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:10:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:10:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:10:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:10:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:10:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:10:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:10:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:10:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:10:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:10:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:10:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:10:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:10:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:10:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:10:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:10:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:10:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:10:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:10:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:10:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:10:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:10:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:10:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:10:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:10:23,322 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:10:23,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:10:23,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:10:23,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:10:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:10:24,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:10:24,363 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:10:24,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:10:24 BoogieIcfgContainer [2020-08-18 20:10:24,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:10:24,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:10:24,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:10:24,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:10:24,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:10:22" (1/3) ... [2020-08-18 20:10:24,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fc729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:10:24, skipping insertion in model container [2020-08-18 20:10:24,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:23" (2/3) ... [2020-08-18 20:10:24,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fc729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:10:24, skipping insertion in model container [2020-08-18 20:10:24,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:10:24" (3/3) ... [2020-08-18 20:10:24,382 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-08-18 20:10:24,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:10:24,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:10:24,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:10:24,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:10:24,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:10:24,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:10:24,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:10:24,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:10:24,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:10:24,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:10:24,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:10:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-08-18 20:10:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:10:24,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:24,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:24,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:24,479 INFO L82 PathProgramCache]: Analyzing trace with hash -219528545, now seen corresponding path program 1 times [2020-08-18 20:10:24,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:24,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092243691] [2020-08-18 20:10:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,069 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:25,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:10:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:10:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:25,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092243691] [2020-08-18 20:10:25,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:25,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:10:25,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287072779] [2020-08-18 20:10:25,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:10:25,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:25,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:10:25,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:10:25,244 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-08-18 20:10:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:26,248 INFO L93 Difference]: Finished difference Result 281 states and 365 transitions. [2020-08-18 20:10:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:10:26,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:10:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:26,265 INFO L225 Difference]: With dead ends: 281 [2020-08-18 20:10:26,265 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 20:10:26,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:10:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 20:10:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-08-18 20:10:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 20:10:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-18 20:10:26,355 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2020-08-18 20:10:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:26,355 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-18 20:10:26,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:10:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-18 20:10:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:10:26,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:26,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:26,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:10:26,359 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash 207659306, now seen corresponding path program 1 times [2020-08-18 20:10:26,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:26,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433990661] [2020-08-18 20:10:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,696 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:10:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:10:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:26,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433990661] [2020-08-18 20:10:26,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:26,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:10:26,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424388982] [2020-08-18 20:10:26,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:10:26,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:26,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:10:26,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:10:26,743 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 4 states. [2020-08-18 20:10:27,144 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:27,834 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-08-18 20:10:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:10:27,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:10:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:27,838 INFO L225 Difference]: With dead ends: 214 [2020-08-18 20:10:27,838 INFO L226 Difference]: Without dead ends: 136 [2020-08-18 20:10:27,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:10:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-18 20:10:27,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-18 20:10:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 20:10:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-08-18 20:10:27,874 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 47 [2020-08-18 20:10:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:27,875 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-08-18 20:10:27,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:10:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-08-18 20:10:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:10:27,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:27,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:27,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:10:27,878 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:27,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1269439858, now seen corresponding path program 1 times [2020-08-18 20:10:27,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:27,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137894850] [2020-08-18 20:10:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,183 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:28,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:10:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:10:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:28,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137894850] [2020-08-18 20:10:28,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:28,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:10:28,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200071215] [2020-08-18 20:10:28,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:10:28,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:28,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:10:28,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:10:28,326 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 8 states. [2020-08-18 20:10:28,682 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:28,994 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:29,252 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:29,511 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:30,589 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-08-18 20:10:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:10:30,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 20:10:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:30,593 INFO L225 Difference]: With dead ends: 223 [2020-08-18 20:10:30,593 INFO L226 Difference]: Without dead ends: 136 [2020-08-18 20:10:30,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:10:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-18 20:10:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-18 20:10:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 20:10:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-08-18 20:10:30,629 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 51 [2020-08-18 20:10:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:30,630 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-08-18 20:10:30,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:10:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-08-18 20:10:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 20:10:30,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:30,632 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] [2020-08-18 20:10:30,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:10:30,632 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:30,633 INFO L82 PathProgramCache]: Analyzing trace with hash 6417079, now seen corresponding path program 1 times [2020-08-18 20:10:30,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:30,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499693352] [2020-08-18 20:10:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:30,927 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:10:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:10:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:10:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:31,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499693352] [2020-08-18 20:10:31,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:31,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:10:31,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086280182] [2020-08-18 20:10:31,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:10:31,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:31,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:10:31,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:10:31,056 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-08-18 20:10:31,380 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:32,614 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:33,046 INFO L93 Difference]: Finished difference Result 306 states and 374 transitions. [2020-08-18 20:10:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:10:33,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 20:10:33,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:33,051 INFO L225 Difference]: With dead ends: 306 [2020-08-18 20:10:33,051 INFO L226 Difference]: Without dead ends: 219 [2020-08-18 20:10:33,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:10:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-08-18 20:10:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-08-18 20:10:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-18 20:10:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-08-18 20:10:33,093 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 59 [2020-08-18 20:10:33,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:33,094 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-08-18 20:10:33,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:10:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-08-18 20:10:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 20:10:33,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:33,097 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] [2020-08-18 20:10:33,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:10:33,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:33,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1711068188, now seen corresponding path program 1 times [2020-08-18 20:10:33,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:33,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682189784] [2020-08-18 20:10:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,421 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:10:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 20:10:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:10:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:33,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682189784] [2020-08-18 20:10:33,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:33,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:10:33,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816179726] [2020-08-18 20:10:33,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:10:33,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:33,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:10:33,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:10:33,531 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 10 states. [2020-08-18 20:10:34,020 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:34,265 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:34,506 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:35,119 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:35,377 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:35,624 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:36,469 INFO L93 Difference]: Finished difference Result 374 states and 456 transitions. [2020-08-18 20:10:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:10:36,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-08-18 20:10:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:36,477 INFO L225 Difference]: With dead ends: 374 [2020-08-18 20:10:36,477 INFO L226 Difference]: Without dead ends: 220 [2020-08-18 20:10:36,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:10:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-18 20:10:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-08-18 20:10:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 20:10:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-08-18 20:10:36,516 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 73 [2020-08-18 20:10:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:36,516 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-08-18 20:10:36,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:10:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-08-18 20:10:36,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 20:10:36,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:36,519 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] [2020-08-18 20:10:36,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:10:36,520 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:36,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:36,520 INFO L82 PathProgramCache]: Analyzing trace with hash -212159846, now seen corresponding path program 1 times [2020-08-18 20:10:36,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:36,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079480662] [2020-08-18 20:10:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,859 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:10:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 20:10:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:10:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:37,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079480662] [2020-08-18 20:10:37,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:37,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:10:37,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233272702] [2020-08-18 20:10:37,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:10:37,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:37,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:10:37,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:10:37,010 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 12 states. [2020-08-18 20:10:37,394 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:37,712 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:37,961 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:38,237 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:38,717 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:39,482 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:39,771 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:40,048 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:40,294 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:40,627 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:40,907 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:42,050 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:42,336 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:42,905 INFO L93 Difference]: Finished difference Result 644 states and 828 transitions. [2020-08-18 20:10:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:10:42,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-18 20:10:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:42,913 INFO L225 Difference]: With dead ends: 644 [2020-08-18 20:10:42,913 INFO L226 Difference]: Without dead ends: 486 [2020-08-18 20:10:42,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 20:10:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-18 20:10:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2020-08-18 20:10:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-18 20:10:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 499 transitions. [2020-08-18 20:10:43,001 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 499 transitions. Word has length 73 [2020-08-18 20:10:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:43,001 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 499 transitions. [2020-08-18 20:10:43,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:10:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 499 transitions. [2020-08-18 20:10:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 20:10:43,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:43,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:43,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:10:43,009 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233311, now seen corresponding path program 1 times [2020-08-18 20:10:43,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:43,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629855162] [2020-08-18 20:10:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,299 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:10:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:10:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:10:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:10:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 20:10:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 20:10:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 20:10:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 20:10:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 20:10:43,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629855162] [2020-08-18 20:10:43,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:10:43,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 20:10:43,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803727896] [2020-08-18 20:10:43,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:10:43,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:10:43,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:10:43,540 INFO L87 Difference]: Start difference. First operand 428 states and 499 transitions. Second operand 13 states. [2020-08-18 20:10:44,013 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:44,580 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:45,041 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:45,292 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:10:45,582 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:45,828 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:46,057 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:46,302 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:10:46,590 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:46,825 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:48,129 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:48,379 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:10:48,612 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:48,834 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:49,214 INFO L93 Difference]: Finished difference Result 767 states and 973 transitions. [2020-08-18 20:10:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 20:10:49,215 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-18 20:10:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:49,220 INFO L225 Difference]: With dead ends: 767 [2020-08-18 20:10:49,221 INFO L226 Difference]: Without dead ends: 363 [2020-08-18 20:10:49,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 20:10:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-18 20:10:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2020-08-18 20:10:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-18 20:10:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2020-08-18 20:10:49,302 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 132 [2020-08-18 20:10:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:49,303 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2020-08-18 20:10:49,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:10:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2020-08-18 20:10:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 20:10:49,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:49,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:49,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:10:49,306 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1980525114, now seen corresponding path program 1 times [2020-08-18 20:10:49,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:49,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863915865] [2020-08-18 20:10:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,579 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:10:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:10:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:10:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 20:10:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:10:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 20:10:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 20:10:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:10:49,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863915865] [2020-08-18 20:10:49,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:10:49,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:10:49,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036071452] [2020-08-18 20:10:49,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:10:49,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:49,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:10:49,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:10:49,750 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand 12 states. [2020-08-18 20:10:50,089 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:50,669 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:51,347 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:51,612 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:51,851 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:52,083 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:52,361 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:52,615 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:53,427 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:54,089 INFO L93 Difference]: Finished difference Result 727 states and 931 transitions. [2020-08-18 20:10:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:10:54,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 20:10:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:54,097 INFO L225 Difference]: With dead ends: 727 [2020-08-18 20:10:54,098 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 20:10:54,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:10:54,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 20:10:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 411. [2020-08-18 20:10:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-08-18 20:10:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 492 transitions. [2020-08-18 20:10:54,183 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 492 transitions. Word has length 128 [2020-08-18 20:10:54,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:54,183 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 492 transitions. [2020-08-18 20:10:54,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:10:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 492 transitions. [2020-08-18 20:10:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 20:10:54,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:54,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:54,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:10:54,187 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2141115904, now seen corresponding path program 2 times [2020-08-18 20:10:54,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:54,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920951849] [2020-08-18 20:10:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:10:54,263 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:10:54,263 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:10:54,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:10:54,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:10:54 BoogieIcfgContainer [2020-08-18 20:10:54,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:10:54,300 INFO L168 Benchmark]: Toolchain (without parser) took 31855.84 ms. Allocated memory was 138.4 MB in the beginning and 642.8 MB in the end (delta: 504.4 MB). Free memory was 100.3 MB in the beginning and 422.4 MB in the end (delta: -322.1 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:54,301 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:10:54,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.42 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 168.9 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:54,303 INFO L168 Benchmark]: Boogie Preprocessor took 91.17 ms. Allocated memory is still 201.3 MB. Free memory was 168.9 MB in the beginning and 164.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:54,303 INFO L168 Benchmark]: RCFGBuilder took 1150.51 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 164.8 MB in the beginning and 196.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:54,304 INFO L168 Benchmark]: TraceAbstraction took 29923.95 ms. Allocated memory was 232.8 MB in the beginning and 642.8 MB in the end (delta: 410.0 MB). Free memory was 194.8 MB in the beginning and 422.4 MB in the end (delta: -227.5 MB). Peak memory consumption was 182.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:54,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.42 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 168.9 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.17 ms. Allocated memory is still 201.3 MB. Free memory was 168.9 MB in the beginning and 164.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1150.51 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 164.8 MB in the beginning and 196.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29923.95 ms. Allocated memory was 232.8 MB in the beginning and 642.8 MB in the end (delta: 410.0 MB). Free memory was 194.8 MB in the beginning and 422.4 MB in the end (delta: -227.5 MB). Peak memory consumption was 182.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] splverifierCounter = 0 [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND TRUE \read(tmp) [L606] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L606] RET waterRise() [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; [L809] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L809] RET, EXPR isHighWaterSensorDry() [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 1 [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L722] int tmp ; [L726] CALL, EXPR isMethaneAlarm() [L747] int retValue_acc ; [L751] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L751] RET, EXPR isMethaneLevelCritical() [L751] retValue_acc = isMethaneLevelCritical() [L753] return (retValue_acc); [L726] RET, EXPR isMethaneAlarm() [L726] tmp = isMethaneAlarm() [L728] COND FALSE !(\read(tmp)) [L732] CALL activatePump__wrappee__highWaterSensor() [L716] pumpRunning = 1 [L732] RET activatePump__wrappee__highWaterSensor() [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 [L153] CALL, EXPR isPumpRunning() [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); [L153] RET, EXPR isPumpRunning() [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) [L157] CALL __automaton_fail() [L211] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 899 SDtfs, 1922 SDslu, 1097 SDs, 0 SdLazy, 5407 SolverSat, 1227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 350 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 772 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 204026 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/52 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...