/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=0.5 --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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:03:00,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:03:00,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:03:00,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:03:00,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:03:00,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:03:00,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:03:00,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:03:00,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:03:00,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:03:00,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:03:00,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:03:00,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:03:00,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:03:00,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:03:00,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:03:00,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:03:00,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:03:00,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:03:00,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:03:00,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:03:00,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:03:00,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:03:00,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:03:00,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:03:00,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:03:00,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:03:00,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:03:00,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:03:00,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:03:00,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:03:00,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:03:00,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:03:00,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:03:00,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:03:00,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:03:00,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:03:00,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:03:00,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:03:00,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:03:00,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:03:00,910 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 06:03:00,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:03:00,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:03:00,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:03:00,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:03:00,940 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:03:00,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:03:00,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:03:00,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:03:00,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:03:00,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:03:00,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:03:00,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:03:00,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:03:00,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:03:00,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:03:00,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:03:00,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:03:00,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:03:00,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:03:00,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:03:00,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:03:00,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:03:00,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:03:00,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:03:00,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:03:00,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:03:00,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:03:00,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:03:00,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:03:00,945 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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-08-22 06:03:01,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:03:01,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:03:01,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:03:01,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:03:01,247 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:03:01,248 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-22 06:03:01,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e2b7ce4b/f9411c20071a4d83b7041c76116f12f0/FLAG84e47d72a [2020-08-22 06:03:01,832 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:03:01,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-22 06:03:01,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e2b7ce4b/f9411c20071a4d83b7041c76116f12f0/FLAG84e47d72a [2020-08-22 06:03:02,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e2b7ce4b/f9411c20071a4d83b7041c76116f12f0 [2020-08-22 06:03:02,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:03:02,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:03:02,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:03:02,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:03:02,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:03:02,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac0e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02, skipping insertion in model container [2020-08-22 06:03:02,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:03:02,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:03:02,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:03:02,753 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:03:02,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:03:02,875 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:03:02,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02 WrapperNode [2020-08-22 06:03:02,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:03:02,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:03:02,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:03:02,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:03:02,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (1/1) ... [2020-08-22 06:03:02,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:03:02,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:03:02,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:03:02,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:03:02,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (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 06:03:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:03:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:03:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:03:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 06:03:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:03:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:03:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:03:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:03:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:03:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:03:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:03:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:03:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:03:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:03:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:03:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:03:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:03:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 06:03:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 06:03:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 06:03:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:03:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:03:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:03:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:03:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:03:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:03:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 06:03:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 06:03:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:03:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:03:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:03:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:03:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:03:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:03:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:03:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:03:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:03:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:03:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:03:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 06:03:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 06:03:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:03:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:03:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:03:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:03:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:03:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:03:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 06:03:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:03:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:03:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:03:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:03:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:03:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:03:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:03:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:03:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:03:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:03:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:03:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:03:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:03:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:03:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:03:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:03:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:03:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:03:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:03:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:03:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:03:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:03:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:03:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:03:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:03:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:03:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:03:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:03:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:03:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:03:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:03:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:03:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 06:03:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 06:03:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:03:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:03:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:03:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:03:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:03:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:03:04,063 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:03:04,064 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:03:04,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:04 BoogieIcfgContainer [2020-08-22 06:03:04,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:03:04,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:03:04,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:03:04,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:03:04,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:03:02" (1/3) ... [2020-08-22 06:03:04,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fec9db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:04, skipping insertion in model container [2020-08-22 06:03:04,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:02" (2/3) ... [2020-08-22 06:03:04,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fec9db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:04, skipping insertion in model container [2020-08-22 06:03:04,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:04" (3/3) ... [2020-08-22 06:03:04,078 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-08-22 06:03:04,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:03:04,099 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:03:04,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:03:04,140 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:03:04,140 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:03:04,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:03:04,141 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:03:04,141 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:03:04,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:03:04,141 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:03:04,142 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:03:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-22 06:03:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 06:03:04,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:04,177 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 06:03:04,177 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-08-22 06:03:04,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:04,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045250647] [2020-08-22 06:03:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,839 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:04,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:03:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:03:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:04,925 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 06:03:04,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045250647] [2020-08-22 06:03:04,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:04,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:03:04,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192228800] [2020-08-22 06:03:04,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:03:04,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:04,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:03:04,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:03:04,953 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-22 06:03:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:06,178 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-22 06:03:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:03:06,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 06:03:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:06,195 INFO L225 Difference]: With dead ends: 329 [2020-08-22 06:03:06,195 INFO L226 Difference]: Without dead ends: 177 [2020-08-22 06:03:06,200 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 06:03:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-22 06:03:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-22 06:03:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-22 06:03:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-08-22 06:03:06,290 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-08-22 06:03:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:06,291 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-08-22 06:03:06,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:03:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-08-22 06:03:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 06:03:06,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:06,295 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 06:03:06,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:03:06,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:06,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-08-22 06:03:06,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:06,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101776421] [2020-08-22 06:03:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,660 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:06,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:03:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:03:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:06,702 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 06:03:06,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101776421] [2020-08-22 06:03:06,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:06,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:03:06,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297231477] [2020-08-22 06:03:06,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:03:06,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:06,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:03:06,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:03:06,706 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 4 states. [2020-08-22 06:03:07,093 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:08,022 INFO L93 Difference]: Finished difference Result 262 states and 322 transitions. [2020-08-22 06:03:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:03:08,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 06:03:08,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:08,026 INFO L225 Difference]: With dead ends: 262 [2020-08-22 06:03:08,026 INFO L226 Difference]: Without dead ends: 161 [2020-08-22 06:03:08,028 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 06:03:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-22 06:03:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-22 06:03:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 06:03:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-22 06:03:08,074 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47 [2020-08-22 06:03:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:08,074 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-22 06:03:08,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:03:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-22 06:03:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 06:03:08,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:08,077 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 06:03:08,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:03:08,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times [2020-08-22 06:03:08,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:08,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024336776] [2020-08-22 06:03:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,433 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:03:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 06:03:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:08,519 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 06:03:08,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024336776] [2020-08-22 06:03:08,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:08,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:03:08,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662017783] [2020-08-22 06:03:08,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:03:08,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:08,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:03:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:03:08,526 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 8 states. [2020-08-22 06:03:08,840 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:09,150 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:09,419 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:09,650 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:10,978 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2020-08-22 06:03:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:03:10,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 06:03:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:10,982 INFO L225 Difference]: With dead ends: 271 [2020-08-22 06:03:10,983 INFO L226 Difference]: Without dead ends: 161 [2020-08-22 06:03:10,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:03:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-22 06:03:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-22 06:03:11,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 06:03:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-08-22 06:03:11,024 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51 [2020-08-22 06:03:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:11,024 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-08-22 06:03:11,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:03:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-08-22 06:03:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 06:03:11,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:11,027 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] [2020-08-22 06:03:11,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:03:11,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:11,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-08-22 06:03:11,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:11,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379270432] [2020-08-22 06:03:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,309 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 06:03:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:03:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:03:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:03:11,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379270432] [2020-08-22 06:03:11,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:11,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:03:11,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275467941] [2020-08-22 06:03:11,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:03:11,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:11,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:03:11,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:03:11,441 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states. [2020-08-22 06:03:11,797 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:12,961 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:13,709 INFO L93 Difference]: Finished difference Result 369 states and 459 transitions. [2020-08-22 06:03:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:03:13,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-22 06:03:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:13,713 INFO L225 Difference]: With dead ends: 369 [2020-08-22 06:03:13,713 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 06:03:13,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:03:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 06:03:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 218. [2020-08-22 06:03:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 06:03:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 248 transitions. [2020-08-22 06:03:13,775 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 248 transitions. Word has length 69 [2020-08-22 06:03:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:13,775 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 248 transitions. [2020-08-22 06:03:13,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:03:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 248 transitions. [2020-08-22 06:03:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 06:03:13,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:13,779 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 06:03:13,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:03:13,779 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:13,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times [2020-08-22 06:03:13,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:13,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670251134] [2020-08-22 06:03:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,045 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:14,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 06:03:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:03:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:03:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 06:03:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 06:03:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:14,167 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 06:03:14,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670251134] [2020-08-22 06:03:14,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:14,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:03:14,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35737705] [2020-08-22 06:03:14,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:03:14,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:14,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:03:14,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:03:14,171 INFO L87 Difference]: Start difference. First operand 218 states and 248 transitions. Second operand 8 states. [2020-08-22 06:03:14,499 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:15,701 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:16,000 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:16,247 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:16,478 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:16,767 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:17,996 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2020-08-22 06:03:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:03:17,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-22 06:03:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:18,003 INFO L225 Difference]: With dead ends: 649 [2020-08-22 06:03:18,003 INFO L226 Difference]: Without dead ends: 455 [2020-08-22 06:03:18,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 06:03:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-22 06:03:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 391. [2020-08-22 06:03:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-22 06:03:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 446 transitions. [2020-08-22 06:03:18,124 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 446 transitions. Word has length 83 [2020-08-22 06:03:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:18,124 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 446 transitions. [2020-08-22 06:03:18,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:03:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 446 transitions. [2020-08-22 06:03:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 06:03:18,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:18,126 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 06:03:18,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:03:18,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times [2020-08-22 06:03:18,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:18,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88951098] [2020-08-22 06:03:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,467 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 06:03:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:03:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:03:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:03:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 06:03:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 06:03:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:18,601 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 06:03:18,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88951098] [2020-08-22 06:03:18,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:18,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:03:18,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637389710] [2020-08-22 06:03:18,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:03:18,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:18,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:03:18,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:03:18,604 INFO L87 Difference]: Start difference. First operand 391 states and 446 transitions. Second operand 9 states. [2020-08-22 06:03:18,933 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:20,050 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:20,262 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:20,520 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:20,765 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:21,044 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:22,146 INFO L93 Difference]: Finished difference Result 494 states and 614 transitions. [2020-08-22 06:03:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 06:03:22,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-22 06:03:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:22,151 INFO L225 Difference]: With dead ends: 494 [2020-08-22 06:03:22,151 INFO L226 Difference]: Without dead ends: 491 [2020-08-22 06:03:22,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 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 06:03:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-22 06:03:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-22 06:03:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-22 06:03:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 445 transitions. [2020-08-22 06:03:22,223 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 445 transitions. Word has length 87 [2020-08-22 06:03:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:22,224 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 445 transitions. [2020-08-22 06:03:22,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:03:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 445 transitions. [2020-08-22 06:03:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 06:03:22,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:22,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:03:22,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:03:22,226 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:22,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:22,227 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-08-22 06:03:22,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:22,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546701494] [2020-08-22 06:03:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,470 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 06:03:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:03:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:03:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:03:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 06:03:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:03:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:22,611 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 06:03:22,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546701494] [2020-08-22 06:03:22,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:22,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:03:22,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820856853] [2020-08-22 06:03:22,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:03:22,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:22,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:03:22,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:03:22,614 INFO L87 Difference]: Start difference. First operand 391 states and 445 transitions. Second operand 9 states. [2020-08-22 06:03:23,490 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:03:23,744 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:03:23,986 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:24,219 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:25,375 INFO L93 Difference]: Finished difference Result 862 states and 1052 transitions. [2020-08-22 06:03:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:03:25,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-22 06:03:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:25,382 INFO L225 Difference]: With dead ends: 862 [2020-08-22 06:03:25,382 INFO L226 Difference]: Without dead ends: 495 [2020-08-22 06:03:25,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 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 06:03:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-22 06:03:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 401. [2020-08-22 06:03:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-22 06:03:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 455 transitions. [2020-08-22 06:03:25,464 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 455 transitions. Word has length 88 [2020-08-22 06:03:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:25,465 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 455 transitions. [2020-08-22 06:03:25,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:03:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 455 transitions. [2020-08-22 06:03:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 06:03:25,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:25,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:03:25,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:03:25,467 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-08-22 06:03:25,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:25,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224167450] [2020-08-22 06:03:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,728 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 06:03:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:03:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:03:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:03:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 06:03:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:03:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:25,862 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 06:03:25,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224167450] [2020-08-22 06:03:25,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:25,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 06:03:25,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925564192] [2020-08-22 06:03:25,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 06:03:25,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:25,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 06:03:25,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:03:25,864 INFO L87 Difference]: Start difference. First operand 401 states and 455 transitions. Second operand 11 states. [2020-08-22 06:03:26,299 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:26,536 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:26,758 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:27,306 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:27,543 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:27,774 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:03:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:29,018 INFO L93 Difference]: Finished difference Result 886 states and 1094 transitions. [2020-08-22 06:03:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:03:29,019 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-22 06:03:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:29,022 INFO L225 Difference]: With dead ends: 886 [2020-08-22 06:03:29,023 INFO L226 Difference]: Without dead ends: 509 [2020-08-22 06:03:29,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 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 06:03:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-22 06:03:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 409. [2020-08-22 06:03:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-22 06:03:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2020-08-22 06:03:29,097 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 88 [2020-08-22 06:03:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:29,098 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2020-08-22 06:03:29,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 06:03:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2020-08-22 06:03:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 06:03:29,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:29,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:03:29,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:03:29,102 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:29,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:29,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-08-22 06:03:29,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:29,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460471133] [2020-08-22 06:03:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,433 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:03:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:03:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:03:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:03:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:03:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:03:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 06:03:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:03:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:03:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:03:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:03:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 06:03:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:03:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:03:29,637 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 06:03:29,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460471133] [2020-08-22 06:03:29,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:03:29,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:03:29,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16476475] [2020-08-22 06:03:29,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:03:29,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:03:29,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:03:29,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:03:29,640 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand 7 states. [2020-08-22 06:03:30,049 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:30,506 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:03:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:03:32,571 INFO L93 Difference]: Finished difference Result 1209 states and 1542 transitions. [2020-08-22 06:03:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:03:32,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-22 06:03:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:03:32,577 INFO L225 Difference]: With dead ends: 1209 [2020-08-22 06:03:32,578 INFO L226 Difference]: Without dead ends: 824 [2020-08-22 06:03:32,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:03:32,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-22 06:03:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 725. [2020-08-22 06:03:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-08-22 06:03:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 857 transitions. [2020-08-22 06:03:32,721 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 857 transitions. Word has length 88 [2020-08-22 06:03:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:03:32,722 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 857 transitions. [2020-08-22 06:03:32,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:03:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 857 transitions. [2020-08-22 06:03:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 06:03:32,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:03:32,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:03:32,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:03:32,725 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:03:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:03:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-08-22 06:03:32,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:03:32,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475390289] [2020-08-22 06:03:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:03:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:03:32,784 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:03:32,784 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:03:32,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:03:32,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:03:32 BoogieIcfgContainer [2020-08-22 06:03:32,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:03:32,832 INFO L168 Benchmark]: Toolchain (without parser) took 30629.82 ms. Allocated memory was 139.5 MB in the beginning and 669.0 MB in the end (delta: 529.5 MB). Free memory was 101.2 MB in the beginning and 175.5 MB in the end (delta: -74.3 MB). Peak memory consumption was 455.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:03:32,833 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:03:32,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.49 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 170.0 MB in the end (delta: -69.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:03:32,842 INFO L168 Benchmark]: Boogie Preprocessor took 91.53 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 165.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:03:32,843 INFO L168 Benchmark]: RCFGBuilder took 1101.18 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.3 MB in the beginning and 193.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:03:32,846 INFO L168 Benchmark]: TraceAbstraction took 28757.22 ms. Allocated memory was 235.9 MB in the beginning and 669.0 MB in the end (delta: 433.1 MB). Free memory was 192.1 MB in the beginning and 175.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 449.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:03:32,852 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.49 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 170.0 MB in the end (delta: -69.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.53 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 165.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1101.18 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.3 MB in the beginning and 193.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28757.22 ms. Allocated memory was 235.9 MB in the beginning and 669.0 MB in the end (delta: 433.1 MB). Free memory was 192.1 MB in the beginning and 175.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 449.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; [L530] FCALL select_helpers() [L531] FCALL select_features() [L532] CALL, EXPR valid_product() [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); [L532] RET, EXPR valid_product() [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) [L536] FCALL setup() [L537] CALL runTest() [L516] CALL test() [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 [L787] COND TRUE 1 [L789] COND TRUE splverifierCounter < 4 [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) [L799] CALL waterRise() [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 [L799] RET waterRise() [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) [L809] CALL changeMethaneLevel() [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 [L809] RET changeMethaneLevel() [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) [L830] CALL timeShift() [L561] COND FALSE !(\read(pumpRunning)) [L568] COND TRUE \read(systemActive) [L570] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__lowWaterSensor() [L616] int tmp ; [L619] COND FALSE !(\read(pumpRunning)) [L634] CALL processEnvironment__wrappee__highWaterSensor() [L590] int tmp ; [L593] COND TRUE ! pumpRunning [L595] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L958] int retValue_acc ; [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L595] RET, EXPR isHighWaterLevel() [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) [L599] CALL activatePump() [L670] pumpRunning = 1 [L599] RET activatePump() [L634] RET processEnvironment__wrappee__highWaterSensor() [L660] RET processEnvironment__wrappee__lowWaterSensor() [L570] RET processEnvironment() [L576] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1166 SDtfs, 2093 SDslu, 1029 SDs, 0 SdLazy, 5358 SolverSat, 1312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred 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: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 586 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 200772 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...