/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:35:53,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:35:53,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:35:53,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:35:53,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:35:53,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:35:53,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:35:53,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:35:53,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:35:53,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:35:53,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:35:53,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:35:53,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:35:53,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:35:53,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:35:53,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:35:53,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:35:53,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:35:53,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:35:53,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:35:53,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:35:53,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:35:53,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:35:53,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:35:53,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:35:53,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:35:53,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:35:53,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:35:53,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:35:53,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:35:53,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:35:53,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:35:53,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:35:53,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:35:53,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:35:53,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:35:53,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:35:53,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:35:53,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:35:53,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:35:53,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:35:53,255 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 [2020-09-24 23:35:53,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:35:53,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:35:53,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:35:53,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:35:53,300 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:35:53,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:35:53,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:35:53,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:35:53,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:35:53,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:35:53,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:35:53,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:35:53,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:35:53,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:35:53,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:35:53,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:35:53,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:35:53,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:35:53,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:35:53,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:35:53,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:35:53,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:35:53,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:35:53,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:35:53,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:35:53,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:35:53,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:35:53,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:35:53,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:35:53,305 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:35:53,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:35:53,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:35:53,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:35:53,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:35:53,757 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:35:53,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-24 23:35:53,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e6ab0575/98d769935e0a4e5f9f90bbed0a913bfa/FLAG604f43b83 [2020-09-24 23:35:54,421 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:35:54,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-24 23:35:54,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e6ab0575/98d769935e0a4e5f9f90bbed0a913bfa/FLAG604f43b83 [2020-09-24 23:35:54,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e6ab0575/98d769935e0a4e5f9f90bbed0a913bfa [2020-09-24 23:35:54,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:35:54,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:35:54,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:35:54,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:35:54,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:35:54,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:54" (1/1) ... [2020-09-24 23:35:54,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d587f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:54, skipping insertion in model container [2020-09-24 23:35:54,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:35:54" (1/1) ... [2020-09-24 23:35:54,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:35:54,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:35:55,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:35:55,325 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:35:55,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:35:55,505 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:35:55,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55 WrapperNode [2020-09-24 23:35:55,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:35:55,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:35:55,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:35:55,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:35:55,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... [2020-09-24 23:35:55,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... [2020-09-24 23:35:55,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... [2020-09-24 23:35:55,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... [2020-09-24 23:35:55,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... [2020-09-24 23:35:55,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... [2020-09-24 23:35:55,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... [2020-09-24 23:35:55,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:35:55,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:35:55,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:35:55,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:35:55,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:35:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:35:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:35:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 23:35:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 23:35:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 23:35:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 23:35:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 23:35:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 23:35:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 23:35:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 23:35:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 23:35:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 23:35:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 23:35:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 23:35:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 23:35:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 23:35:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:35:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 23:35:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 23:35:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 23:35:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 23:35:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 23:35:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 23:35:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 23:35:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 23:35:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 23:35:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 23:35:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 23:35:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 23:35:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 23:35:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 23:35:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 23:35:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 23:35:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 23:35:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 23:35:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 23:35:55,686 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 23:35:55,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:35:55,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:35:55,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:35:55,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:35:55,687 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:35:55,687 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 23:35:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 23:35:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 23:35:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 23:35:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 23:35:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 23:35:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 23:35:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 23:35:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 23:35:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 23:35:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 23:35:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:35:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 23:35:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 23:35:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 23:35:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 23:35:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 23:35:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 23:35:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 23:35:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 23:35:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 23:35:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 23:35:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:35:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 23:35:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 23:35:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 23:35:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 23:35:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 23:35:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:35:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:35:55,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 23:35:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:35:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:35:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:35:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:35:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 23:35:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:35:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 23:35:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 23:35:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:35:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 23:35:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 23:35:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 23:35:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 23:35:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 23:35:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 23:35:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:35:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:35:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:35:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:35:56,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:35:56,781 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 23:35:56,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:56 BoogieIcfgContainer [2020-09-24 23:35:56,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:35:56,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:35:56,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:35:56,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:35:56,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:35:54" (1/3) ... [2020-09-24 23:35:56,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c77205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:56, skipping insertion in model container [2020-09-24 23:35:56,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:35:55" (2/3) ... [2020-09-24 23:35:56,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c77205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:35:56, skipping insertion in model container [2020-09-24 23:35:56,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:35:56" (3/3) ... [2020-09-24 23:35:56,799 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-09-24 23:35:56,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:35:56,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:35:56,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:35:56,874 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:35:56,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:35:56,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:35:56,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:35:56,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:35:56,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:35:56,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:35:56,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:35:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2020-09-24 23:35:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 23:35:56,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:35:56,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:35:56,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:35:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:35:56,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1883472631, now seen corresponding path program 1 times [2020-09-24 23:35:56,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:35:56,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277907197] [2020-09-24 23:35:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:35:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:35:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:35:59,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:02,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:02,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 23:36:02,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:36:02,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 23:36:02,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:36:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 23:36:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 23:36:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:36:02,735 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:36:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:36:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:36:03,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-24 23:36:03,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:03,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:36:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:36:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:03,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:03,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:36:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:03,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:36:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:03,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:36:03,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:03,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:03,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:36:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:36:03,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:36:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:03,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:36:03,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 23:36:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:03,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:36:03,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:03,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 23:36:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:03,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:36:03,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:36:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:03,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 23:36:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:03,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:03,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:36:03,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277907197] [2020-09-24 23:36:03,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:36:03,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:36:03,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133067615] [2020-09-24 23:36:03,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:36:03,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:36:03,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:36:03,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:36:03,382 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 8 states. [2020-09-24 23:36:03,970 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:36:05,892 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:06,282 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:36:06,727 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:07,178 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:36:07,505 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:36:07,838 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:08,191 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:36:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:36:09,600 INFO L93 Difference]: Finished difference Result 671 states and 831 transitions. [2020-09-24 23:36:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:36:09,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 23:36:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:36:09,627 INFO L225 Difference]: With dead ends: 671 [2020-09-24 23:36:09,627 INFO L226 Difference]: Without dead ends: 464 [2020-09-24 23:36:09,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:36:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-24 23:36:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 416. [2020-09-24 23:36:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-09-24 23:36:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-09-24 23:36:09,817 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 153 [2020-09-24 23:36:09,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:36:09,819 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-09-24 23:36:09,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:36:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-09-24 23:36:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 23:36:09,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:09,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:36:09,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:36:09,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash 886163450, now seen corresponding path program 1 times [2020-09-24 23:36:09,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:09,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436923316] [2020-09-24 23:36:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 23:36:11,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-09-24 23:36:11,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:36:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 23:36:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:36:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:11,425 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:36:11,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:36:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:36:11,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 23:36:11,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 23:36:11,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:36:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:11,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:36:11,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:36:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:11,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:11,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:36:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:11,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:36:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:11,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:36:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:11,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:36:11,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 23:36:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:36:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:36:11,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:36:11,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 23:36:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:11,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-24 23:36:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:11,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:11,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 23:36:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:11,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:11,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:11,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:36:11,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:11,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:11,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:11,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:11,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:36:11,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436923316] [2020-09-24 23:36:11,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:36:11,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:36:11,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489967833] [2020-09-24 23:36:11,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:36:11,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:36:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:36:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:36:11,951 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 6 states. [2020-09-24 23:36:12,427 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:36:13,298 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:36:16,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:36:16,116 INFO L93 Difference]: Finished difference Result 1294 states and 1612 transitions. [2020-09-24 23:36:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:36:16,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-24 23:36:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:36:16,129 INFO L225 Difference]: With dead ends: 1294 [2020-09-24 23:36:16,129 INFO L226 Difference]: Without dead ends: 988 [2020-09-24 23:36:16,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:36:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-09-24 23:36:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 879. [2020-09-24 23:36:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-24 23:36:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1039 transitions. [2020-09-24 23:36:16,281 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1039 transitions. Word has length 168 [2020-09-24 23:36:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:36:16,282 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1039 transitions. [2020-09-24 23:36:16,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:36:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1039 transitions. [2020-09-24 23:36:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 23:36:16,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:16,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:36:16,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:36:16,289 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:16,289 INFO L82 PathProgramCache]: Analyzing trace with hash -755283321, now seen corresponding path program 1 times [2020-09-24 23:36:16,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:16,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185652252] [2020-09-24 23:36:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:21,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:21,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-24 23:36:21,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:36:21,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 23:36:21,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:36:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 23:36:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 23:36:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:21,788 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:36:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:36:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:36:22,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 23:36:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:36:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:36:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:22,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:36:22,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:36:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:36:22,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:36:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:36:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:22,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:36:22,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:36:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:36:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:22,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:22,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:36:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 23:36:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:36:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:36:22,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:36:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 23:36:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:36:22,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:36:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:36:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:36:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:36:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:36:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:36:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:36:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:36:22,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:36:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:36:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:36:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:36:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:36:22,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:22,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:36:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:36:22,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:36:22,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 23:36:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:22,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:36:22,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:22,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 23:36:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:22,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:22,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-24 23:36:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:36:22,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:36:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:36:22,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:36:22,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:36:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:36:22,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:36:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:36:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:36:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:36:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:36:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:36:22,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185652252] [2020-09-24 23:36:22,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:36:22,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:36:22,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962748929] [2020-09-24 23:36:22,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:36:22,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:36:22,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:36:22,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:36:22,431 INFO L87 Difference]: Start difference. First operand 879 states and 1039 transitions. Second operand 8 states. [2020-09-24 23:36:22,972 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:36:24,806 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:36:26,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:36:26,928 INFO L93 Difference]: Finished difference Result 2312 states and 3025 transitions. [2020-09-24 23:36:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 23:36:26,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-24 23:36:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:36:26,952 INFO L225 Difference]: With dead ends: 2312 [2020-09-24 23:36:26,952 INFO L226 Difference]: Without dead ends: 1543 [2020-09-24 23:36:26,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:36:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-09-24 23:36:27,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1266. [2020-09-24 23:36:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-09-24 23:36:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1496 transitions. [2020-09-24 23:36:27,268 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1496 transitions. Word has length 181 [2020-09-24 23:36:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:36:27,271 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 1496 transitions. [2020-09-24 23:36:27,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:36:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1496 transitions. [2020-09-24 23:36:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 23:36:27,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:36:27,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:36:27,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:36:27,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:36:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:36:27,277 INFO L82 PathProgramCache]: Analyzing trace with hash 82436204, now seen corresponding path program 1 times [2020-09-24 23:36:27,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:36:27,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279336844] [2020-09-24 23:36:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:36:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:36:27,354 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:36:27,354 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:36:27,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:36:27,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:36:27 BoogieIcfgContainer [2020-09-24 23:36:27,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:36:27,388 INFO L168 Benchmark]: Toolchain (without parser) took 32674.65 ms. Allocated memory was 141.0 MB in the beginning and 615.5 MB in the end (delta: 474.5 MB). Free memory was 103.5 MB in the beginning and 103.2 MB in the end (delta: 289.2 kB). Peak memory consumption was 474.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:27,389 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 23:36:27,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.69 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 174.1 MB in the end (delta: -71.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:27,391 INFO L168 Benchmark]: Boogie Preprocessor took 98.86 ms. Allocated memory is still 205.0 MB. Free memory was 174.1 MB in the beginning and 170.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:27,392 INFO L168 Benchmark]: RCFGBuilder took 1182.72 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.1 MB in the beginning and 174.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:27,393 INFO L168 Benchmark]: TraceAbstraction took 30595.75 ms. Allocated memory was 235.4 MB in the beginning and 615.5 MB in the end (delta: 380.1 MB). Free memory was 174.4 MB in the beginning and 103.2 MB in the end (delta: 71.2 MB). Peak memory consumption was 451.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:36:27,397 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 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.69 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 174.1 MB in the end (delta: -71.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.86 ms. Allocated memory is still 205.0 MB. Free memory was 174.1 MB in the beginning and 170.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1182.72 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.1 MB in the beginning and 174.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30595.75 ms. Allocated memory was 235.4 MB in the beginning and 615.5 MB in the end (delta: 380.1 MB). Free memory was 174.4 MB in the beginning and 103.2 MB in the end (delta: 71.2 MB). Peak memory consumption was 451.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 451]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L625] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L381] int splverifierCounter ; [L382] int tmp ; [L383] int tmp___0 ; [L384] int tmp___1 ; [L385] int tmp___2 ; [L388] splverifierCounter = 0 [L390] COND TRUE 1 [L392] COND TRUE splverifierCounter < 4 [L398] tmp = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp) [L402] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L402] RET waterRise() [L408] tmp___0 = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp___0)) [L418] tmp___2 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___2)) [L424] tmp___1 = __VERIFIER_nondet_int() [L426] COND TRUE \read(tmp___1) [L428] CALL stopSystem() [L367] COND FALSE !(\read(pumpRunning)) [L374] systemActive = 0 [L428] RET stopSystem() [L435] CALL timeShift() [L193] COND FALSE !(\read(pumpRunning)) [L200] COND FALSE !(\read(systemActive)) [L208] CALL __utac_acc__Specification3_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L921] int tmp___1 ; [L925] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L925] RET, EXPR isMethaneLevelCritical() [L925] tmp = isMethaneLevelCritical() [L927] COND FALSE !(\read(tmp)) [L931] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L931] RET, EXPR getWaterLevel() [L931] tmp___0 = getWaterLevel() [L933] COND TRUE tmp___0 == 2 [L935] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L935] RET, EXPR isPumpRunning() [L935] tmp___1 = isPumpRunning() [L937] COND FALSE !(\read(tmp___1)) [L941] CALL __automaton_fail() [L451] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 918 SDtfs, 2163 SDslu, 1260 SDs, 0 SdLazy, 2950 SolverSat, 808 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1266occurred in iteration=3, 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, 3 MinimizatonAttempts, 434 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 679 NumberOfCodeBlocks, 679 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 499 ConstructedInterpolants, 0 QuantifiedInterpolants, 263230 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...