/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:25:44,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:25:44,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:25:44,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:25:44,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:25:44,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:25:44,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:25:44,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:25:44,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:25:44,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:25:44,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:25:44,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:25:44,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:25:44,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:25:44,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:25:44,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:25:44,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:25:44,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:25:44,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:25:44,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:25:44,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:25:44,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:25:44,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:25:44,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:25:44,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:25:44,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:25:44,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:25:44,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:25:44,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:25:44,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:25:44,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:25:44,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:25:44,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:25:44,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:25:44,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:25:44,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:25:44,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:25:44,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:25:44,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:25:44,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:25:44,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:25:44,798 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 [2020-08-22 04:25:44,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:25:44,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:25:44,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:25:44,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:25:44,821 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:25:44,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:25:44,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:25:44,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:25:44,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:25:44,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:25:44,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:25:44,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:25:44,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:25:44,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:25:44,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:25:44,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:25:44,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:25:44,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:25:44,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:25:44,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:25:44,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:25:44,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:25:44,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:25:44,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:25:44,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:25:44,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:25:44,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:25:44,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:25:44,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:25:44,826 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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:25:45,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:25:45,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:25:45,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:25:45,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:25:45,153 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:25:45,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-22 04:25:45,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9378f7b4a/adf882ad39484b689a44faad93141987/FLAG4f97aaf90 [2020-08-22 04:25:45,816 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:25:45,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-22 04:25:45,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9378f7b4a/adf882ad39484b689a44faad93141987/FLAG4f97aaf90 [2020-08-22 04:25:46,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9378f7b4a/adf882ad39484b689a44faad93141987 [2020-08-22 04:25:46,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:25:46,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:25:46,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:25:46,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:25:46,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:25:46,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156a129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46, skipping insertion in model container [2020-08-22 04:25:46,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:25:46,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:25:46,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:25:46,634 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:25:46,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:25:46,772 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:25:46,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46 WrapperNode [2020-08-22 04:25:46,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:25:46,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:25:46,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:25:46,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:25:46,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (1/1) ... [2020-08-22 04:25:46,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:25:46,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:25:46,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:25:46,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:25:46,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (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 [2020-08-22 04:25:46,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:25:46,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:25:46,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:25:46,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 04:25:46,973 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:25:46,973 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:25:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:25:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:25:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:25:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:25:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:25:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:25:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:25:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:25:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:25:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:25:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:25:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:25:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:25:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:25:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:25:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:25:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:25:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:25:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:25:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:25:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:25:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:25:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:25:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:25:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:25:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:25:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:25:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:25:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:25:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:25:46,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:25:46,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:25:46,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:25:46,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:25:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:25:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:25:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:25:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:25:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:25:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:25:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:25:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:25:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:25:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:25:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:25:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:25:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:25:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:25:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:25:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:25:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:25:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:25:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:25:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:25:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:25:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:25:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:25:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:25:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:25:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:25:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:25:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:25:46,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:25:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:25:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:25:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:25:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:25:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:25:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:25:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:25:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:25:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:25:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:25:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:25:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:25:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:25:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:25:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:25:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:25:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:25:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:25:48,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:25:48,108 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:25:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:25:48 BoogieIcfgContainer [2020-08-22 04:25:48,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:25:48,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:25:48,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:25:48,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:25:48,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:25:46" (1/3) ... [2020-08-22 04:25:48,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f34b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:25:48, skipping insertion in model container [2020-08-22 04:25:48,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:46" (2/3) ... [2020-08-22 04:25:48,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f34b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:25:48, skipping insertion in model container [2020-08-22 04:25:48,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:25:48" (3/3) ... [2020-08-22 04:25:48,121 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-08-22 04:25:48,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:25:48,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:25:48,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:25:48,179 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:25:48,179 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:25:48,179 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:25:48,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:25:48,180 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:25:48,180 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:25:48,180 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:25:48,180 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:25:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-22 04:25:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 04:25:48,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:48,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:48,215 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:48,221 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-08-22 04:25:48,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:48,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623392734] [2020-08-22 04:25:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:48,941 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:49,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:25:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:25:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:49,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623392734] [2020-08-22 04:25:49,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:49,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:25:49,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480361238] [2020-08-22 04:25:49,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:25:49,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:49,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:25:49,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:25:49,073 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-22 04:25:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:50,245 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-22 04:25:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:25:50,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 04:25:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:50,263 INFO L225 Difference]: With dead ends: 297 [2020-08-22 04:25:50,264 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 04:25:50,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:25:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 04:25:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-22 04:25:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-22 04:25:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-22 04:25:50,359 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-22 04:25:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:50,359 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-22 04:25:50,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:25:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-22 04:25:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 04:25:50,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:50,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:50,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:25:50,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:50,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:50,366 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-08-22 04:25:50,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:50,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47251297] [2020-08-22 04:25:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,716 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:25:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:25:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:50,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47251297] [2020-08-22 04:25:50,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:50,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:25:50,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408868760] [2020-08-22 04:25:50,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:25:50,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:25:50,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:25:50,778 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-22 04:25:51,202 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:52,059 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-22 04:25:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:25:52,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 04:25:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:52,063 INFO L225 Difference]: With dead ends: 230 [2020-08-22 04:25:52,064 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 04:25:52,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:25:52,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 04:25:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-22 04:25:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 04:25:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-22 04:25:52,102 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-22 04:25:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:52,102 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-22 04:25:52,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:25:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-22 04:25:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:25:52,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:52,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:52,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:25:52,105 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:52,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2059632594, now seen corresponding path program 1 times [2020-08-22 04:25:52,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:52,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305995772] [2020-08-22 04:25:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,420 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:25:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:25:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:52,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305995772] [2020-08-22 04:25:52,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:52,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:25:52,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103135211] [2020-08-22 04:25:52,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:25:52,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:52,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:25:52,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:25:52,537 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-22 04:25:52,964 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:53,269 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:53,523 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:53,803 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:54,926 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-22 04:25:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:25:54,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 04:25:54,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:54,929 INFO L225 Difference]: With dead ends: 239 [2020-08-22 04:25:54,930 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 04:25:54,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:25:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 04:25:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-22 04:25:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 04:25:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-22 04:25:54,988 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-22 04:25:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:54,988 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-22 04:25:54,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:25:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-22 04:25:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 04:25:54,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:54,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:54,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:25:54,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:54,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-08-22 04:25:54,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:54,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003833548] [2020-08-22 04:25:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,269 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:25:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:25:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 04:25:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:55,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003833548] [2020-08-22 04:25:55,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:55,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:25:55,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502653996] [2020-08-22 04:25:55,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:25:55,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:55,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:25:55,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:25:55,394 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-22 04:25:55,733 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:56,895 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:57,638 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-22 04:25:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:25:57,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-22 04:25:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:57,642 INFO L225 Difference]: With dead ends: 331 [2020-08-22 04:25:57,642 INFO L226 Difference]: Without dead ends: 236 [2020-08-22 04:25:57,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:25:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-22 04:25:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-22 04:25:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-22 04:25:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-22 04:25:57,694 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-22 04:25:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:57,695 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-22 04:25:57,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:25:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-22 04:25:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:25:57,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:57,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:57,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:25:57,698 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:57,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash 590157777, now seen corresponding path program 1 times [2020-08-22 04:25:57,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:57,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010313830] [2020-08-22 04:25:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,036 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:25:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:25:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:25:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 04:25:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:25:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:58,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010313830] [2020-08-22 04:25:58,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:58,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:25:58,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443802111] [2020-08-22 04:25:58,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:25:58,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:58,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:25:58,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:25:58,187 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 8 states. [2020-08-22 04:25:58,558 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:59,656 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:59,922 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:26:00,148 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:26:00,367 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:26:00,651 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:26:01,640 INFO L93 Difference]: Finished difference Result 580 states and 716 transitions. [2020-08-22 04:26:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:26:01,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-22 04:26:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:26:01,646 INFO L225 Difference]: With dead ends: 580 [2020-08-22 04:26:01,647 INFO L226 Difference]: Without dead ends: 409 [2020-08-22 04:26:01,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:26:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-08-22 04:26:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 345. [2020-08-22 04:26:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-22 04:26:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2020-08-22 04:26:01,731 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 78 [2020-08-22 04:26:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:26:01,732 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2020-08-22 04:26:01,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:26:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2020-08-22 04:26:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 04:26:01,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:26:01,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:26:01,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:26:01,735 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:26:01,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:26:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-08-22 04:26:01,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:26:01,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362009087] [2020-08-22 04:26:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:26:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,074 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:26:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:26:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:26:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:26:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:26:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:26:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:26:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:26:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:26:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:26:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 04:26:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:26:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:26:02,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362009087] [2020-08-22 04:26:02,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:26:02,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:26:02,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297392772] [2020-08-22 04:26:02,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:26:02,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:26:02,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:26:02,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:26:02,171 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand 9 states. [2020-08-22 04:26:02,554 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:26:03,558 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:26:03,797 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:26:04,052 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:26:04,289 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:26:04,534 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:26:05,582 INFO L93 Difference]: Finished difference Result 448 states and 562 transitions. [2020-08-22 04:26:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:26:05,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-22 04:26:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:26:05,587 INFO L225 Difference]: With dead ends: 448 [2020-08-22 04:26:05,587 INFO L226 Difference]: Without dead ends: 445 [2020-08-22 04:26:05,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:26:05,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-22 04:26:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 345. [2020-08-22 04:26:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-22 04:26:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-22 04:26:05,662 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 82 [2020-08-22 04:26:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:26:05,663 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-22 04:26:05,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:26:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-22 04:26:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:26:05,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:26:05,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:26:05,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:26:05,665 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:26:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:26:05,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-08-22 04:26:05,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:26:05,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732210866] [2020-08-22 04:26:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:26:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,890 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:26:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:26:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:26:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:26:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:26:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:26:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:26:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:26:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:05,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:26:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:06,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:26:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:06,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:26:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:26:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:26:06,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732210866] [2020-08-22 04:26:06,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:26:06,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:26:06,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538136840] [2020-08-22 04:26:06,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:26:06,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:26:06,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:26:06,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:26:06,019 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 9 states. [2020-08-22 04:26:06,854 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:26:07,086 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:26:07,340 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:07,559 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:08,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:26:08,542 INFO L93 Difference]: Finished difference Result 770 states and 946 transitions. [2020-08-22 04:26:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:26:08,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 04:26:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:26:08,547 INFO L225 Difference]: With dead ends: 770 [2020-08-22 04:26:08,547 INFO L226 Difference]: Without dead ends: 449 [2020-08-22 04:26:08,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:26:08,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-22 04:26:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 355. [2020-08-22 04:26:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-08-22 04:26:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 403 transitions. [2020-08-22 04:26:08,627 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 403 transitions. Word has length 83 [2020-08-22 04:26:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:26:08,628 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 403 transitions. [2020-08-22 04:26:08,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:26:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 403 transitions. [2020-08-22 04:26:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:26:08,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:26:08,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:26:08,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:26:08,630 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:26:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:26:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-08-22 04:26:08,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:26:08,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278209639] [2020-08-22 04:26:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:26:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,876 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:26:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:26:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:26:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:26:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:26:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:26:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:26:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:26:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:26:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:26:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:26:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:26:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:26:09,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278209639] [2020-08-22 04:26:09,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:26:09,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:26:09,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976446051] [2020-08-22 04:26:09,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:26:09,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:26:09,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:26:09,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:26:09,003 INFO L87 Difference]: Start difference. First operand 355 states and 403 transitions. Second operand 11 states. [2020-08-22 04:26:09,595 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:09,826 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:10,048 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:10,595 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:10,834 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:11,064 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:26:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:26:12,161 INFO L93 Difference]: Finished difference Result 794 states and 986 transitions. [2020-08-22 04:26:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:26:12,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-22 04:26:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:26:12,167 INFO L225 Difference]: With dead ends: 794 [2020-08-22 04:26:12,167 INFO L226 Difference]: Without dead ends: 463 [2020-08-22 04:26:12,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:26:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-22 04:26:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-22 04:26:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-22 04:26:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 411 transitions. [2020-08-22 04:26:12,254 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 411 transitions. Word has length 83 [2020-08-22 04:26:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:26:12,254 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 411 transitions. [2020-08-22 04:26:12,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:26:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 411 transitions. [2020-08-22 04:26:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:26:12,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:26:12,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:26:12,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:26:12,260 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:26:12,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:26:12,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-08-22 04:26:12,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:26:12,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513053203] [2020-08-22 04:26:12,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:26:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,519 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:26:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:26:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:26:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:26:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:26:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:26:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:26:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:26:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:26:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:26:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:26:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:26:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:26:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:26:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:26:12,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513053203] [2020-08-22 04:26:12,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:26:12,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:26:12,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283704816] [2020-08-22 04:26:12,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:26:12,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:26:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:26:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:26:12,643 INFO L87 Difference]: Start difference. First operand 363 states and 411 transitions. Second operand 7 states. [2020-08-22 04:26:13,030 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:26:13,557 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:26:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:26:15,470 INFO L93 Difference]: Finished difference Result 1097 states and 1408 transitions. [2020-08-22 04:26:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:26:15,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-22 04:26:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:26:15,477 INFO L225 Difference]: With dead ends: 1097 [2020-08-22 04:26:15,477 INFO L226 Difference]: Without dead ends: 758 [2020-08-22 04:26:15,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:26:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-22 04:26:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 659. [2020-08-22 04:26:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-22 04:26:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 781 transitions. [2020-08-22 04:26:15,607 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 781 transitions. Word has length 83 [2020-08-22 04:26:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:26:15,608 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 781 transitions. [2020-08-22 04:26:15,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:26:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 781 transitions. [2020-08-22 04:26:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 04:26:15,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:26:15,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:26:15,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:26:15,610 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:26:15,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:26:15,611 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-08-22 04:26:15,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:26:15,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927150315] [2020-08-22 04:26:15,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:26:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:26:15,667 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:26:15,668 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:26:15,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:26:15,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:26:15 BoogieIcfgContainer [2020-08-22 04:26:15,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:26:15,698 INFO L168 Benchmark]: Toolchain (without parser) took 29602.83 ms. Allocated memory was 137.9 MB in the beginning and 639.6 MB in the end (delta: 501.7 MB). Free memory was 100.0 MB in the beginning and 511.9 MB in the end (delta: -411.9 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:26:15,698 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:26:15,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.08 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.8 MB in the beginning and 169.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:26:15,700 INFO L168 Benchmark]: Boogie Preprocessor took 108.07 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 165.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:26:15,701 INFO L168 Benchmark]: RCFGBuilder took 1231.34 ms. Allocated memory was 202.4 MB in the beginning and 232.8 MB in the end (delta: 30.4 MB). Free memory was 165.5 MB in the beginning and 194.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:26:15,702 INFO L168 Benchmark]: TraceAbstraction took 27581.24 ms. Allocated memory was 232.8 MB in the beginning and 639.6 MB in the end (delta: 406.8 MB). Free memory was 194.9 MB in the beginning and 511.9 MB in the end (delta: -317.0 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:26:15,705 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.08 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.8 MB in the beginning and 169.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.07 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 165.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1231.34 ms. Allocated memory was 202.4 MB in the beginning and 232.8 MB in the end (delta: 30.4 MB). Free memory was 165.5 MB in the beginning and 194.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27581.24 ms. Allocated memory was 232.8 MB in the beginning and 639.6 MB in the end (delta: 406.8 MB). Free memory was 194.9 MB in the beginning and 511.9 MB in the end (delta: -317.0 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1045 SDtfs, 1701 SDslu, 960 SDs, 0 SdLazy, 4845 SolverSat, 1008 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...