/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:04:50,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:04:50,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:04:50,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:04:50,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:04:50,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:04:50,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:04:50,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:04:50,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:04:50,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:04:50,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:04:50,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:04:50,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:04:50,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:04:50,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:04:50,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:04:50,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:04:50,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:04:50,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:04:50,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:04:50,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:04:50,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:04:50,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:04:50,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:04:50,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:04:50,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:04:50,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:04:50,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:04:50,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:04:50,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:04:50,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:04:50,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:04:50,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:04:50,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:04:50,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:04:50,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:04:50,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:04:50,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:04:50,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:04:50,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:04:50,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:04:50,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:04:50,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:04:50,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:04:50,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:04:50,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:04:50,206 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:04:50,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:04:50,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:04:50,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:04:50,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:04:50,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:04:50,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:04:50,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:04:50,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:04:50,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:04:50,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:04:50,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:04:50,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:04:50,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:04:50,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:04:50,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:04:50,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:04:50,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:04:50,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:04:50,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:04:50,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:04:50,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:04:50,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:04:50,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:04:50,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:04:50,211 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 -> false [2020-08-21 13:04:50,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:04:50,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:04:50,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:04:50,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:04:50,557 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:04:50,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-21 13:04:50,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/673da73fc/c424f348a97f48269cd3fdf792cab3db/FLAG9ffbd91d1 [2020-08-21 13:04:51,228 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:04:51,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-21 13:04:51,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/673da73fc/c424f348a97f48269cd3fdf792cab3db/FLAG9ffbd91d1 [2020-08-21 13:04:51,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/673da73fc/c424f348a97f48269cd3fdf792cab3db [2020-08-21 13:04:51,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:04:51,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:04:51,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:04:51,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:04:51,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:04:51,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:04:51" (1/1) ... [2020-08-21 13:04:51,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3685902f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:51, skipping insertion in model container [2020-08-21 13:04:51,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:04:51" (1/1) ... [2020-08-21 13:04:51,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:04:51,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:04:52,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:04:52,073 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:04:52,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:04:52,202 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:04:52,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52 WrapperNode [2020-08-21 13:04:52,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:04:52,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:04:52,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:04:52,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:04:52,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:04:52,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:04:52,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:04:52,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:04:52,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:04:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:04:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:04:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:04:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:04:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:04:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:04:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:04:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:04:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:04:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:04:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:04:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:04:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:04:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:04:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:04:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:04:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:04:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:04:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:04:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:04:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:04:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:04:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:04:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:04:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:04:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:04:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:04:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:04:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:04:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:04:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:04:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:04:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:04:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:04:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:04:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:04:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:04:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:04:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:04:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:04:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:04:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:04:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:04:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:04:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:04:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:04:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:04:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:04:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:04:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:04:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:04:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:04:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:04:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:04:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:04:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:04:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:04:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:04:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:04:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:04:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:04:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:04:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:04:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:04:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:04:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:04:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:04:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:04:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:04:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:04:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:04:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:04:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:04:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:04:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:04:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:04:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:04:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:04:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:04:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:04:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:04:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:04:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:04:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:04:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:04:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:04:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:04:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:04:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:04:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:04:53,485 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:04:53,486 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:04:53,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:04:53 BoogieIcfgContainer [2020-08-21 13:04:53,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:04:53,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:04:53,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:04:53,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:04:53,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:04:51" (1/3) ... [2020-08-21 13:04:53,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4582f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:04:53, skipping insertion in model container [2020-08-21 13:04:53,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (2/3) ... [2020-08-21 13:04:53,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4582f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:04:53, skipping insertion in model container [2020-08-21 13:04:53,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:04:53" (3/3) ... [2020-08-21 13:04:53,499 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-08-21 13:04:53,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:04:53,517 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:04:53,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:04:53,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:04:53,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:04:53,557 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:04:53,557 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:04:53,557 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:04:53,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:04:53,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:04:53,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:04:53,579 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-21 13:04:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:04:53,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:53,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:04:53,591 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:53,597 INFO L82 PathProgramCache]: Analyzing trace with hash -749162492, now seen corresponding path program 1 times [2020-08-21 13:04:53,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:53,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979867944] [2020-08-21 13:04:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,236 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:54,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:04:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:04:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:54,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979867944] [2020-08-21 13:04:54,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:54,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:04:54,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694985592] [2020-08-21 13:04:54,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:04:54,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:54,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:04:54,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:04:54,366 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-21 13:04:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:04:55,474 INFO L93 Difference]: Finished difference Result 287 states and 378 transitions. [2020-08-21 13:04:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:04:55,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:04:55,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:04:55,492 INFO L225 Difference]: With dead ends: 287 [2020-08-21 13:04:55,492 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 13:04:55,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:04:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 13:04:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-21 13:04:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 13:04:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-08-21 13:04:55,580 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 46 [2020-08-21 13:04:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:04:55,581 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-08-21 13:04:55,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:04:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-08-21 13:04:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:04:55,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:55,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:04:55,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:04:55,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1435333190, now seen corresponding path program 1 times [2020-08-21 13:04:55,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:55,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424358379] [2020-08-21 13:04:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:55,969 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:55,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:55,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:55,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:55,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:04:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:04:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:56,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424358379] [2020-08-21 13:04:56,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:56,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:04:56,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139617792] [2020-08-21 13:04:56,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:04:56,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:56,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:04:56,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:04:56,012 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 4 states. [2020-08-21 13:04:56,391 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:04:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:04:57,144 INFO L93 Difference]: Finished difference Result 220 states and 269 transitions. [2020-08-21 13:04:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:04:57,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:04:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:04:57,148 INFO L225 Difference]: With dead ends: 220 [2020-08-21 13:04:57,149 INFO L226 Difference]: Without dead ends: 139 [2020-08-21 13:04:57,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:04:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-21 13:04:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-21 13:04:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 13:04:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-21 13:04:57,187 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 47 [2020-08-21 13:04:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:04:57,187 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-21 13:04:57,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:04:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-21 13:04:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:04:57,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:57,190 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] [2020-08-21 13:04:57,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:04:57,191 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:57,191 INFO L82 PathProgramCache]: Analyzing trace with hash 325618258, now seen corresponding path program 1 times [2020-08-21 13:04:57,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:57,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221796933] [2020-08-21 13:04:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,517 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:57,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:04:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:04:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:57,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221796933] [2020-08-21 13:04:57,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:57,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:04:57,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035221731] [2020-08-21 13:04:57,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:04:57,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:57,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:04:57,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:04:57,595 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 8 states. [2020-08-21 13:04:57,935 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:04:58,277 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:04:58,517 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:04:58,740 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:04:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:04:59,806 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2020-08-21 13:04:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:04:59,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 13:04:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:04:59,811 INFO L225 Difference]: With dead ends: 229 [2020-08-21 13:04:59,811 INFO L226 Difference]: Without dead ends: 139 [2020-08-21 13:04:59,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:04:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-21 13:04:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-21 13:04:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 13:04:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-21 13:04:59,847 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 51 [2020-08-21 13:04:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:04:59,848 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-21 13:04:59,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:04:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-21 13:04:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 13:04:59,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:59,851 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] [2020-08-21 13:04:59,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:04:59,851 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:59,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1759847866, now seen corresponding path program 1 times [2020-08-21 13:04:59,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:59,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055959724] [2020-08-21 13:04:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,126 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:05:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:05:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:05:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:00,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055959724] [2020-08-21 13:05:00,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:00,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:05:00,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053845528] [2020-08-21 13:05:00,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:05:00,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:00,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:05:00,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:05:00,208 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 6 states. [2020-08-21 13:05:00,561 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:01,666 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:02,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:02,280 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2020-08-21 13:05:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:05:02,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 13:05:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:02,285 INFO L225 Difference]: With dead ends: 321 [2020-08-21 13:05:02,285 INFO L226 Difference]: Without dead ends: 231 [2020-08-21 13:05:02,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:05:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-21 13:05:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2020-08-21 13:05:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-21 13:05:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-08-21 13:05:02,332 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 64 [2020-08-21 13:05:02,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:02,332 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-08-21 13:05:02,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:05:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-08-21 13:05:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 13:05:02,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:02,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:02,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:05:02,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1017680522, now seen corresponding path program 1 times [2020-08-21 13:05:02,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:02,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249282031] [2020-08-21 13:05:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,654 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:02,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:05:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 13:05:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:05:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:02,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249282031] [2020-08-21 13:05:02,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:02,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:05:02,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230173516] [2020-08-21 13:05:02,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:05:02,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:02,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:05:02,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:05:02,861 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 8 states. [2020-08-21 13:05:03,254 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:04,325 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:04,618 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:04,863 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:05,096 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:05,398 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:06,394 INFO L93 Difference]: Finished difference Result 565 states and 701 transitions. [2020-08-21 13:05:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:05:06,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-21 13:05:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:06,401 INFO L225 Difference]: With dead ends: 565 [2020-08-21 13:05:06,401 INFO L226 Difference]: Without dead ends: 399 [2020-08-21 13:05:06,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:05:06,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-21 13:05:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 335. [2020-08-21 13:05:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 13:05:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 384 transitions. [2020-08-21 13:05:06,485 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 384 transitions. Word has length 78 [2020-08-21 13:05:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:06,486 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 384 transitions. [2020-08-21 13:05:06,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:05:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 384 transitions. [2020-08-21 13:05:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 13:05:06,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:06,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:06,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:05:06,489 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:06,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:06,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1476513266, now seen corresponding path program 1 times [2020-08-21 13:05:06,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:06,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041680501] [2020-08-21 13:05:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,758 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:05:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 13:05:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:05:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:06,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041680501] [2020-08-21 13:05:06,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:06,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:05:06,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022349774] [2020-08-21 13:05:06,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:05:06,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:06,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:05:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:05:06,918 INFO L87 Difference]: Start difference. First operand 335 states and 384 transitions. Second operand 9 states. [2020-08-21 13:05:07,294 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:08,331 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:08,550 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:08,805 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:09,055 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:09,327 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:10,263 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2020-08-21 13:05:10,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:05:10,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-21 13:05:10,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:10,269 INFO L225 Difference]: With dead ends: 438 [2020-08-21 13:05:10,269 INFO L226 Difference]: Without dead ends: 435 [2020-08-21 13:05:10,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:05:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-21 13:05:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 335. [2020-08-21 13:05:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 13:05:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2020-08-21 13:05:10,352 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 82 [2020-08-21 13:05:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:10,352 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2020-08-21 13:05:10,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:05:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2020-08-21 13:05:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 13:05:10,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:10,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:10,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:05:10,355 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868364, now seen corresponding path program 1 times [2020-08-21 13:05:10,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:10,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501475444] [2020-08-21 13:05:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,584 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:05:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 13:05:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 13:05:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:10,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501475444] [2020-08-21 13:05:10,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:10,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:05:10,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221174771] [2020-08-21 13:05:10,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:05:10,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:10,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:05:10,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:05:10,744 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand 9 states. [2020-08-21 13:05:11,502 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:11,737 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:05:11,969 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:12,192 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:13,114 INFO L93 Difference]: Finished difference Result 750 states and 926 transitions. [2020-08-21 13:05:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:05:13,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 13:05:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:13,118 INFO L225 Difference]: With dead ends: 750 [2020-08-21 13:05:13,118 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 13:05:13,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:05:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 13:05:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 345. [2020-08-21 13:05:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-21 13:05:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-21 13:05:13,189 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 83 [2020-08-21 13:05:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:13,190 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-21 13:05:13,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:05:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-21 13:05:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 13:05:13,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:13,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:13,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:05:13,192 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:13,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1596500618, now seen corresponding path program 1 times [2020-08-21 13:05:13,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:13,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120600839] [2020-08-21 13:05:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,438 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:13,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:05:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 13:05:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 13:05:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:13,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120600839] [2020-08-21 13:05:13,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:13,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:05:13,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190108738] [2020-08-21 13:05:13,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:05:13,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:13,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:05:13,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:05:13,578 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 11 states. [2020-08-21 13:05:14,150 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:14,402 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:14,648 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:15,251 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:15,514 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:15,762 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:16,845 INFO L93 Difference]: Finished difference Result 774 states and 966 transitions. [2020-08-21 13:05:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:05:16,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-21 13:05:16,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:16,850 INFO L225 Difference]: With dead ends: 774 [2020-08-21 13:05:16,850 INFO L226 Difference]: Without dead ends: 453 [2020-08-21 13:05:16,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:05:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-08-21 13:05:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 353. [2020-08-21 13:05:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-21 13:05:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 401 transitions. [2020-08-21 13:05:16,927 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 401 transitions. Word has length 83 [2020-08-21 13:05:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:16,928 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 401 transitions. [2020-08-21 13:05:16,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:05:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 401 transitions. [2020-08-21 13:05:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 13:05:16,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:16,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:16,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:05:16,932 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1672974679, now seen corresponding path program 1 times [2020-08-21 13:05:16,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:16,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817891140] [2020-08-21 13:05:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,249 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:05:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 13:05:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 13:05:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:17,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817891140] [2020-08-21 13:05:17,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:17,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:05:17,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152248113] [2020-08-21 13:05:17,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:05:17,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:17,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:05:17,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:05:17,439 INFO L87 Difference]: Start difference. First operand 353 states and 401 transitions. Second operand 7 states. [2020-08-21 13:05:17,912 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:18,437 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:20,395 INFO L93 Difference]: Finished difference Result 1077 states and 1388 transitions. [2020-08-21 13:05:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 13:05:20,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 13:05:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:20,403 INFO L225 Difference]: With dead ends: 1077 [2020-08-21 13:05:20,404 INFO L226 Difference]: Without dead ends: 748 [2020-08-21 13:05:20,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:05:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-21 13:05:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 649. [2020-08-21 13:05:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 13:05:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 771 transitions. [2020-08-21 13:05:20,560 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 771 transitions. Word has length 83 [2020-08-21 13:05:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:20,563 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 771 transitions. [2020-08-21 13:05:20,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:05:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 771 transitions. [2020-08-21 13:05:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 13:05:20,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:20,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:20,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:05:20,566 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:20,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:20,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1457224847, now seen corresponding path program 1 times [2020-08-21 13:05:20,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:20,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16528495] [2020-08-21 13:05:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:05:20,638 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:05:20,638 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:05:20,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:05:20,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:05:20 BoogieIcfgContainer [2020-08-21 13:05:20,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:05:20,694 INFO L168 Benchmark]: Toolchain (without parser) took 29187.20 ms. Allocated memory was 141.6 MB in the beginning and 617.6 MB in the end (delta: 476.1 MB). Free memory was 103.6 MB in the beginning and 119.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 460.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:20,696 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-21 13:05:20,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.66 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.6 MB in the beginning and 170.7 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:20,697 INFO L168 Benchmark]: Boogie Preprocessor took 112.43 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 167.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:20,702 INFO L168 Benchmark]: RCFGBuilder took 1175.21 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 167.0 MB in the beginning and 189.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:20,703 INFO L168 Benchmark]: TraceAbstraction took 27189.61 ms. Allocated memory was 233.3 MB in the beginning and 617.6 MB in the end (delta: 384.3 MB). Free memory was 188.1 MB in the beginning and 119.6 MB in the end (delta: 68.4 MB). Peak memory consumption was 452.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:20,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.66 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.6 MB in the beginning and 170.7 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.43 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 167.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1175.21 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 167.0 MB in the beginning and 189.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27189.61 ms. Allocated memory was 233.3 MB in the beginning and 617.6 MB in the end (delta: 384.3 MB). Free memory was 188.1 MB in the beginning and 119.6 MB in the end (delta: 68.4 MB). Peak memory consumption was 452.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L832] int waterLevel = 1; [L833] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L574] int retValue_acc ; [L577] retValue_acc = 1 [L578] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L850] COND TRUE waterLevel < 2 [L851] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L862] COND FALSE !(\read(methaneLevelCritical)) [L865] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L819] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] CALL processEnvironment() [L650] int tmp ; [L653] COND FALSE !(\read(pumpRunning)) [L668] CALL processEnvironment__wrappee__highWaterSensor() [L624] int tmp ; [L627] COND TRUE ! pumpRunning [L629] CALL, EXPR isHighWaterLevel() [L747] int retValue_acc ; [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isHighWaterSensorDry() [L912] int retValue_acc ; [L915] COND FALSE !(waterLevel < 2) [L919] retValue_acc = 0 [L920] return (retValue_acc); [L753] RET, EXPR isHighWaterSensorDry() [L753] tmp = isHighWaterSensorDry() [L755] COND FALSE !(\read(tmp)) [L758] tmp___0 = 1 [L760] retValue_acc = tmp___0 [L761] return (retValue_acc); [L629] RET, EXPR isHighWaterLevel() [L629] tmp = isHighWaterLevel() [L631] COND TRUE \read(tmp) [L633] CALL activatePump() [L678] pumpRunning = 1 [L633] RET activatePump() [L668] RET processEnvironment__wrappee__highWaterSensor() [L604] RET processEnvironment() [L610] CALL __utac_acc__Specification1_spec__1() [L514] int tmp ; [L515] int tmp___0 ; [L519] CALL, EXPR isMethaneLevelCritical() [L871] int retValue_acc ; [L874] retValue_acc = methaneLevelCritical [L875] return (retValue_acc); [L519] RET, EXPR isMethaneLevelCritical() [L519] tmp = isMethaneLevelCritical() [L521] COND TRUE \read(tmp) [L523] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L523] RET, EXPR isPumpRunning() [L523] tmp___0 = isPumpRunning() [L525] COND TRUE \read(tmp___0) [L527] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1007 SDtfs, 1711 SDslu, 938 SDs, 0 SdLazy, 4720 SolverSat, 1069 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...