/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:11:57,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:11:57,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:11:57,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:11:57,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:11:57,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:11:57,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:11:57,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:11:57,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:11:57,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:11:57,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:11:57,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:11:57,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:11:57,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:11:57,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:11:57,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:11:57,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:11:57,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:11:57,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:11:57,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:11:57,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:11:57,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:11:57,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:11:57,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:11:57,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:11:57,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:11:57,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:11:57,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:11:57,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:11:57,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:11:57,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:11:57,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:11:57,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:11:57,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:11:57,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:11:57,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:11:57,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:11:57,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:11:57,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:11:57,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:11:57,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:11:57,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:11:57,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:11:57,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:11:57,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:11:57,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:11:57,305 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:11:57,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:11:57,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:11:57,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:11:57,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:11:57,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:11:57,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:11:57,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:11:57,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:11:57,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:11:57,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:11:57,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:11:57,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:11:57,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:11:57,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:11:57,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:11:57,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:11:57,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:11:57,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:11:57,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:11:57,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:11:57,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:11:57,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:11:57,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:11:57,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:11:57,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:11:57,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:11:57,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:11:57,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:11:57,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:11:57,671 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:11:57,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-21 21:11:57,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fad310e60/dd8449d9f1a64bb99fccdb1466007c47/FLAG4f32afbcb [2020-08-21 21:11:58,314 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:11:58,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-21 21:11:58,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fad310e60/dd8449d9f1a64bb99fccdb1466007c47/FLAG4f32afbcb [2020-08-21 21:11:58,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fad310e60/dd8449d9f1a64bb99fccdb1466007c47 [2020-08-21 21:11:58,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:11:58,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:11:58,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:11:58,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:11:58,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:11:58,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:11:58" (1/1) ... [2020-08-21 21:11:58,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180afe8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:58, skipping insertion in model container [2020-08-21 21:11:58,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:11:58" (1/1) ... [2020-08-21 21:11:58,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:11:58,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:11:59,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:11:59,113 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:11:59,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:11:59,227 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:11:59,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59 WrapperNode [2020-08-21 21:11:59,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:11:59,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:11:59,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:11:59,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:11:59,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... [2020-08-21 21:11:59,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... [2020-08-21 21:11:59,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... [2020-08-21 21:11:59,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... [2020-08-21 21:11:59,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... [2020-08-21 21:11:59,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... [2020-08-21 21:11:59,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... [2020-08-21 21:11:59,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:11:59,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:11:59,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:11:59,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:11:59,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:11:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:11:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:11:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:11:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:11:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:11:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:11:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:11:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:11:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:11:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:11:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:11:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:11:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:11:59,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:11:59,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:11:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:11:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:11:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:11:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:11:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:11:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:11:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:11:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:11:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:11:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:11:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:11:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:11:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:11:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:11:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:11:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:11:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:11:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:11:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:11:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:11:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:11:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:11:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 21:11:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:11:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:11:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:11:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:11:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:11:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:11:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:11:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:11:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:11:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:11:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:11:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:11:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:11:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:11:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:11:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:11:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:11:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:11:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:11:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:11:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:11:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:11:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:11:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:11:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:11:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:11:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:11:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:11:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:11:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:11:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:11:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:11:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:11:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:11:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:11:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:11:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:11:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:11:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:11:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:11:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:11:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:11:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 21:11:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:11:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:11:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:11:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:11:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:11:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:11:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:11:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:11:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:12:00,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:12:00,503 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:12:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:00 BoogieIcfgContainer [2020-08-21 21:12:00,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:12:00,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:12:00,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:12:00,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:12:00,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:11:58" (1/3) ... [2020-08-21 21:12:00,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d73853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:00, skipping insertion in model container [2020-08-21 21:12:00,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:11:59" (2/3) ... [2020-08-21 21:12:00,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d73853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:00, skipping insertion in model container [2020-08-21 21:12:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:00" (3/3) ... [2020-08-21 21:12:00,523 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2020-08-21 21:12:00,533 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:12:00,541 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:12:00,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:12:00,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:12:00,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:12:00,573 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:12:00,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:12:00,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:12:00,573 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:12:00,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:12:00,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:12:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-08-21 21:12:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:12:00,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:00,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:12:00,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash 506531791, now seen corresponding path program 1 times [2020-08-21 21:12:00,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:00,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946291055] [2020-08-21 21:12:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,285 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:01,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:12:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:12:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:12:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:01,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946291055] [2020-08-21 21:12:01,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:01,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:12:01,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744817635] [2020-08-21 21:12:01,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:12:01,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:01,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:12:01,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:12:01,463 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 3 states. [2020-08-21 21:12:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:02,500 INFO L93 Difference]: Finished difference Result 273 states and 360 transitions. [2020-08-21 21:12:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:12:02,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 21:12:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:02,516 INFO L225 Difference]: With dead ends: 273 [2020-08-21 21:12:02,517 INFO L226 Difference]: Without dead ends: 148 [2020-08-21 21:12:02,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:12:02,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-21 21:12:02,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-08-21 21:12:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 21:12:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 21:12:02,609 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52 [2020-08-21 21:12:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:02,609 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 21:12:02,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:12:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 21:12:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 21:12:02,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:02,614 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] [2020-08-21 21:12:02,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:12:02,614 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:02,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:02,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1226284601, now seen corresponding path program 1 times [2020-08-21 21:12:02,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:02,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671453777] [2020-08-21 21:12:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:02,983 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:12:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:12:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:03,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671453777] [2020-08-21 21:12:03,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:03,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:12:03,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380151115] [2020-08-21 21:12:03,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:12:03,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:03,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:12:03,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:12:03,071 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-08-21 21:12:03,505 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:12:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:04,180 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2020-08-21 21:12:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:12:04,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 21:12:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:04,184 INFO L225 Difference]: With dead ends: 200 [2020-08-21 21:12:04,185 INFO L226 Difference]: Without dead ends: 132 [2020-08-21 21:12:04,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:12:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-21 21:12:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-08-21 21:12:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 21:12:04,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-08-21 21:12:04,220 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53 [2020-08-21 21:12:04,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:04,221 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-08-21 21:12:04,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:12:04,221 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-08-21 21:12:04,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:12:04,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:04,224 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] [2020-08-21 21:12:04,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:12:04,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:04,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:04,224 INFO L82 PathProgramCache]: Analyzing trace with hash -860632419, now seen corresponding path program 1 times [2020-08-21 21:12:04,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:04,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085398998] [2020-08-21 21:12:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,529 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:12:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:12:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:12:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:04,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085398998] [2020-08-21 21:12:04,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:04,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:04,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110282660] [2020-08-21 21:12:04,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:04,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:04,675 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 8 states. [2020-08-21 21:12:05,090 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:05,377 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:05,617 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:05,866 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:06,537 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:12:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:07,966 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2020-08-21 21:12:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:12:07,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 21:12:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:07,973 INFO L225 Difference]: With dead ends: 375 [2020-08-21 21:12:07,973 INFO L226 Difference]: Without dead ends: 292 [2020-08-21 21:12:07,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:12:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-21 21:12:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-08-21 21:12:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 21:12:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2020-08-21 21:12:08,060 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 57 [2020-08-21 21:12:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:08,060 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2020-08-21 21:12:08,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2020-08-21 21:12:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 21:12:08,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:08,063 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] [2020-08-21 21:12:08,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:12:08,064 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:08,064 INFO L82 PathProgramCache]: Analyzing trace with hash -792004887, now seen corresponding path program 1 times [2020-08-21 21:12:08,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:08,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106655170] [2020-08-21 21:12:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,330 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:08,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:12:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:12:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 21:12:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:08,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106655170] [2020-08-21 21:12:08,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:08,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:08,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455191259] [2020-08-21 21:12:08,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:08,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:08,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:08,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:08,445 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand 8 states. [2020-08-21 21:12:08,810 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:10,020 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:10,319 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:10,599 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:10,842 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:11,415 INFO L93 Difference]: Finished difference Result 726 states and 953 transitions. [2020-08-21 21:12:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:12:11,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 21:12:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:11,426 INFO L225 Difference]: With dead ends: 726 [2020-08-21 21:12:11,426 INFO L226 Difference]: Without dead ends: 512 [2020-08-21 21:12:11,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:12:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-08-21 21:12:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 449. [2020-08-21 21:12:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-21 21:12:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 555 transitions. [2020-08-21 21:12:11,557 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 555 transitions. Word has length 63 [2020-08-21 21:12:11,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:11,558 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 555 transitions. [2020-08-21 21:12:11,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:11,558 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 555 transitions. [2020-08-21 21:12:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 21:12:11,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:11,562 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] [2020-08-21 21:12:11,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:12:11,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:11,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:11,563 INFO L82 PathProgramCache]: Analyzing trace with hash -328985137, now seen corresponding path program 1 times [2020-08-21 21:12:11,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:11,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141459665] [2020-08-21 21:12:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,848 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:12:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:12:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:12:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 21:12:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:11,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141459665] [2020-08-21 21:12:11,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:11,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:12:11,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383036776] [2020-08-21 21:12:11,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:12:11,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:11,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:12:11,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:12:11,960 INFO L87 Difference]: Start difference. First operand 449 states and 555 transitions. Second operand 6 states. [2020-08-21 21:12:12,273 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:12,913 INFO L93 Difference]: Finished difference Result 761 states and 976 transitions. [2020-08-21 21:12:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:12:12,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 21:12:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:12,922 INFO L225 Difference]: With dead ends: 761 [2020-08-21 21:12:12,922 INFO L226 Difference]: Without dead ends: 336 [2020-08-21 21:12:12,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:12:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-21 21:12:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 315. [2020-08-21 21:12:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-21 21:12:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 366 transitions. [2020-08-21 21:12:12,984 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 366 transitions. Word has length 67 [2020-08-21 21:12:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:12,985 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 366 transitions. [2020-08-21 21:12:12,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:12:12,985 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 366 transitions. [2020-08-21 21:12:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 21:12:12,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:12,987 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] [2020-08-21 21:12:12,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:12:12,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:12,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:12,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1802868975, now seen corresponding path program 1 times [2020-08-21 21:12:12,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:12,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683546427] [2020-08-21 21:12:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:12:13,049 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:12:13,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:12:13,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:12:13,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:12:13 BoogieIcfgContainer [2020-08-21 21:12:13,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:12:13,078 INFO L168 Benchmark]: Toolchain (without parser) took 14470.87 ms. Allocated memory was 145.8 MB in the beginning and 468.2 MB in the end (delta: 322.4 MB). Free memory was 99.8 MB in the beginning and 82.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 339.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:13,079 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:12:13,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.31 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 99.5 MB in the beginning and 168.6 MB in the end (delta: -69.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:13,081 INFO L168 Benchmark]: Boogie Preprocessor took 96.75 ms. Allocated memory is still 201.3 MB. Free memory was 168.3 MB in the beginning and 164.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:13,082 INFO L168 Benchmark]: RCFGBuilder took 1187.95 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 163.6 MB in the beginning and 194.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:13,083 INFO L168 Benchmark]: TraceAbstraction took 12562.24 ms. Allocated memory was 233.8 MB in the beginning and 468.2 MB in the end (delta: 234.4 MB). Free memory was 194.7 MB in the beginning and 82.7 MB in the end (delta: 111.9 MB). Peak memory consumption was 346.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:13,087 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 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 619.31 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 99.5 MB in the beginning and 168.6 MB in the end (delta: -69.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.75 ms. Allocated memory is still 201.3 MB. Free memory was 168.3 MB in the beginning and 164.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1187.95 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 163.6 MB in the beginning and 194.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12562.24 ms. Allocated memory was 233.8 MB in the beginning and 468.2 MB in the end (delta: 234.4 MB). Free memory was 194.7 MB in the beginning and 82.7 MB in the end (delta: 111.9 MB). Peak memory consumption was 346.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L293] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int cleanupTimeShifts = 4; [L594] int waterLevel = 1; [L595] int methaneLevelCritical = 0; [L753] int pumpRunning = 0; [L754] int systemActive = 1; [L568] int retValue_acc ; [L569] int tmp ; [L573] FCALL select_helpers() [L574] FCALL select_features() [L575] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L575] RET, EXPR valid_product() [L575] tmp = valid_product() [L577] COND TRUE \read(tmp) [L579] FCALL setup() [L580] CALL runTest() [L562] CALL test() [L685] int splverifierCounter ; [L686] int tmp ; [L687] int tmp___0 ; [L688] int tmp___1 ; [L689] int tmp___2 ; [L692] splverifierCounter = 0 [L694] COND TRUE 1 [L696] COND TRUE splverifierCounter < 4 [L702] tmp = __VERIFIER_nondet_int() [L704] COND TRUE \read(tmp) [L706] CALL waterRise() [L612] COND TRUE waterLevel < 2 [L613] waterLevel = waterLevel + 1 [L706] RET waterRise() [L712] tmp___0 = __VERIFIER_nondet_int() [L714] COND FALSE !(\read(tmp___0)) [L722] tmp___2 = __VERIFIER_nondet_int() [L724] COND FALSE !(\read(tmp___2)) [L728] tmp___1 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___1) [L732] CALL stopSystem() [L908] COND FALSE !(\read(pumpRunning)) [L915] systemActive = 0 [L732] RET stopSystem() [L739] CALL timeShift() [L760] COND FALSE !(\read(pumpRunning)) [L767] COND FALSE !(\read(systemActive)) [L775] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L633] int retValue_acc ; [L636] retValue_acc = methaneLevelCritical [L637] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L665] int retValue_acc ; [L668] retValue_acc = waterLevel [L669] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L841] int retValue_acc ; [L844] retValue_acc = pumpRunning [L845] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 877 SDslu, 356 SDs, 0 SdLazy, 1788 SolverSat, 556 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 195 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...