/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:15:41,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:15:41,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:15:41,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:15:41,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:15:41,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:15:41,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:15:41,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:15:41,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:15:41,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:15:41,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:15:41,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:15:41,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:15:41,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:15:41,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:15:41,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:15:41,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:15:41,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:15:41,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:15:41,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:15:41,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:15:41,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:15:41,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:15:41,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:15:41,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:15:41,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:15:41,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:15:41,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:15:41,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:15:41,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:15:41,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:15:41,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:15:41,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:15:41,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:15:41,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:15:41,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:15:41,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:15:41,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:15:41,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:15:41,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:15:41,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:15:41,890 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 [2020-08-18 19:15:41,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:15:41,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:15:41,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:15:41,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:15:41,936 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:15:41,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:15:41,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:15:41,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:15:41,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:15:41,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:15:41,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:15:41,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:15:41,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:15:41,940 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:15:41,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:15:41,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:15:41,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:15:41,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:15:41,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:15:41,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:15:41,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:15:41,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:15:41,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:15:41,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:15:41,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:15:41,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:15:41,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:15:41,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:15:41,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:15:41,943 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=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:15:42,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:15:42,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:15:42,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:15:42,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:15:42,289 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:15:42,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-18 19:15:42,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/605d477c4/118d02366b224ad098434609cdf41cd5/FLAGfcf36f926 [2020-08-18 19:15:42,883 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:15:42,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-18 19:15:42,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/605d477c4/118d02366b224ad098434609cdf41cd5/FLAGfcf36f926 [2020-08-18 19:15:43,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/605d477c4/118d02366b224ad098434609cdf41cd5 [2020-08-18 19:15:43,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:15:43,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:15:43,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:15:43,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:15:43,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:15:43,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c975714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43, skipping insertion in model container [2020-08-18 19:15:43,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:15:43,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:15:43,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:15:43,739 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:15:43,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:15:43,861 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:15:43,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43 WrapperNode [2020-08-18 19:15:43,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:15:43,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:15:43,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:15:43,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:15:43,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (1/1) ... [2020-08-18 19:15:43,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:15:43,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:15:43,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:15:43,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:15:43,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (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 [2020-08-18 19:15:44,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:15:44,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:15:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:15:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:15:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:15:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:15:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:15:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:15:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:15:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:15:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:15:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:15:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:15:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:15:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:15:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:15:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:15:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:15:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:15:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:15:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:15:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:15:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:15:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:15:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:15:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:15:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:15:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:15:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:15:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:15:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:15:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:15:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 19:15:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:15:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:15:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:15:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:15:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:15:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:15:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:15:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:15:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:15:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:15:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:15:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:15:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:15:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:15:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:15:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:15:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:15:45,132 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:15:45,133 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:15:45,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:15:45 BoogieIcfgContainer [2020-08-18 19:15:45,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:15:45,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:15:45,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:15:45,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:15:45,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:15:43" (1/3) ... [2020-08-18 19:15:45,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfe763c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:15:45, skipping insertion in model container [2020-08-18 19:15:45,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:15:43" (2/3) ... [2020-08-18 19:15:45,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfe763c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:15:45, skipping insertion in model container [2020-08-18 19:15:45,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:15:45" (3/3) ... [2020-08-18 19:15:45,147 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2020-08-18 19:15:45,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:15:45,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:15:45,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:15:45,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:15:45,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:15:45,204 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:15:45,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:15:45,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:15:45,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:15:45,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:15:45,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:15:45,226 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-08-18 19:15:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 19:15:45,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:45,236 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] [2020-08-18 19:15:45,237 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1542772809, now seen corresponding path program 1 times [2020-08-18 19:15:45,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:45,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912845509] [2020-08-18 19:15:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,895 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:45,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:15:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:15:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:15:45,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912845509] [2020-08-18 19:15:45,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:45,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:15:45,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179317435] [2020-08-18 19:15:45,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:15:45,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:46,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:15:46,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:15:46,018 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-08-18 19:15:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:47,105 INFO L93 Difference]: Finished difference Result 284 states and 371 transitions. [2020-08-18 19:15:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:15:47,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 19:15:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:47,121 INFO L225 Difference]: With dead ends: 284 [2020-08-18 19:15:47,121 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 19:15:47,126 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 [2020-08-18 19:15:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 19:15:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 121. [2020-08-18 19:15:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 19:15:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-08-18 19:15:47,215 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 46 [2020-08-18 19:15:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:47,215 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-08-18 19:15:47,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:15:47,216 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-08-18 19:15:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 19:15:47,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:47,219 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] [2020-08-18 19:15:47,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:15:47,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:47,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1355296267, now seen corresponding path program 1 times [2020-08-18 19:15:47,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:47,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724910252] [2020-08-18 19:15:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,649 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:15:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:15:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:15:47,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724910252] [2020-08-18 19:15:47,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:47,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:15:47,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315857034] [2020-08-18 19:15:47,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:15:47,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:47,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:15:47,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:15:47,705 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 4 states. [2020-08-18 19:15:48,084 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:15:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:48,921 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-08-18 19:15:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:15:48,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 19:15:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:48,929 INFO L225 Difference]: With dead ends: 213 [2020-08-18 19:15:48,930 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 19:15:48,933 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 [2020-08-18 19:15:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 19:15:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-08-18 19:15:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-18 19:15:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2020-08-18 19:15:48,988 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 47 [2020-08-18 19:15:48,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:48,988 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2020-08-18 19:15:48,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:15:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2020-08-18 19:15:49,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 19:15:49,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:49,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:49,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:15:49,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash 604849678, now seen corresponding path program 1 times [2020-08-18 19:15:49,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:49,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552208720] [2020-08-18 19:15:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,353 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:15:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:15:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:15:49,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552208720] [2020-08-18 19:15:49,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:49,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:15:49,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251652878] [2020-08-18 19:15:49,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:15:49,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:49,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:15:49,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:15:49,447 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 8 states. [2020-08-18 19:15:49,768 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:50,114 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:50,348 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:50,576 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:51,625 INFO L93 Difference]: Finished difference Result 226 states and 276 transitions. [2020-08-18 19:15:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:15:51,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 19:15:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:51,629 INFO L225 Difference]: With dead ends: 226 [2020-08-18 19:15:51,629 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 19:15:51,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:15:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 19:15:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-08-18 19:15:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-18 19:15:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-08-18 19:15:51,660 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 52 [2020-08-18 19:15:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:51,661 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-08-18 19:15:51,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:15:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-08-18 19:15:51,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 19:15:51,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:51,662 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] [2020-08-18 19:15:51,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:15:51,663 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:51,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2012335283, now seen corresponding path program 1 times [2020-08-18 19:15:51,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:51,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015487445] [2020-08-18 19:15:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:51,989 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:15:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 19:15:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 19:15:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:15:52,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015487445] [2020-08-18 19:15:52,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:52,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:15:52,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712240653] [2020-08-18 19:15:52,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:15:52,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:15:52,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:15:52,068 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 6 states. [2020-08-18 19:15:52,380 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:53,437 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:15:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:54,003 INFO L93 Difference]: Finished difference Result 314 states and 386 transitions. [2020-08-18 19:15:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:15:54,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 19:15:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:54,007 INFO L225 Difference]: With dead ends: 314 [2020-08-18 19:15:54,007 INFO L226 Difference]: Without dead ends: 226 [2020-08-18 19:15:54,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:15:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-08-18 19:15:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 183. [2020-08-18 19:15:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-08-18 19:15:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 209 transitions. [2020-08-18 19:15:54,069 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 209 transitions. Word has length 60 [2020-08-18 19:15:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:54,069 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 209 transitions. [2020-08-18 19:15:54,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:15:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 209 transitions. [2020-08-18 19:15:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 19:15:54,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:54,071 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] [2020-08-18 19:15:54,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:15:54,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:54,072 INFO L82 PathProgramCache]: Analyzing trace with hash 471487289, now seen corresponding path program 1 times [2020-08-18 19:15:54,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:54,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286812214] [2020-08-18 19:15:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,375 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:54,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:15:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:15:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:15:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 19:15:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 19:15:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:15:54,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286812214] [2020-08-18 19:15:54,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:54,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:15:54,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949724298] [2020-08-18 19:15:54,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:15:54,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:54,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:15:54,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:15:54,488 INFO L87 Difference]: Start difference. First operand 183 states and 209 transitions. Second operand 8 states. [2020-08-18 19:15:54,804 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:55,785 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:56,089 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:56,557 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:56,810 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:15:57,066 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:15:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:15:57,772 INFO L93 Difference]: Finished difference Result 547 states and 678 transitions. [2020-08-18 19:15:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:15:57,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-18 19:15:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:15:57,778 INFO L225 Difference]: With dead ends: 547 [2020-08-18 19:15:57,778 INFO L226 Difference]: Without dead ends: 388 [2020-08-18 19:15:57,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:15:57,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-08-18 19:15:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 321. [2020-08-18 19:15:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 19:15:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2020-08-18 19:15:57,854 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 74 [2020-08-18 19:15:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:15:57,855 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2020-08-18 19:15:57,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:15:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2020-08-18 19:15:57,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 19:15:57,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:15:57,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:15:57,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:15:57,857 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:15:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:15:57,858 INFO L82 PathProgramCache]: Analyzing trace with hash -968585995, now seen corresponding path program 1 times [2020-08-18 19:15:57,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:15:57,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128328309] [2020-08-18 19:15:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:15:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,186 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:15:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:15:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:15:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:15:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:15:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:15:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:15:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:15:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:15:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:15:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:15:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 19:15:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:15:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:15:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:15:58,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128328309] [2020-08-18 19:15:58,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:15:58,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:15:58,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209218997] [2020-08-18 19:15:58,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:15:58,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:15:58,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:15:58,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:15:58,287 INFO L87 Difference]: Start difference. First operand 321 states and 368 transitions. Second operand 9 states. [2020-08-18 19:15:58,694 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:15:59,838 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:00,097 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:00,907 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:01,178 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:01,408 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:01,627 INFO L93 Difference]: Finished difference Result 430 states and 544 transitions. [2020-08-18 19:16:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:16:01,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 19:16:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:01,631 INFO L225 Difference]: With dead ends: 430 [2020-08-18 19:16:01,632 INFO L226 Difference]: Without dead ends: 427 [2020-08-18 19:16:01,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:16:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-08-18 19:16:01,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 321. [2020-08-18 19:16:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 19:16:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 367 transitions. [2020-08-18 19:16:01,702 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 367 transitions. Word has length 78 [2020-08-18 19:16:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:01,703 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 367 transitions. [2020-08-18 19:16:01,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:01,703 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 367 transitions. [2020-08-18 19:16:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:16:01,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:01,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:01,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:16:01,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash 662445521, now seen corresponding path program 1 times [2020-08-18 19:16:01,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:01,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833074501] [2020-08-18 19:16:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,932 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:16:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:16:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:16:02,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833074501] [2020-08-18 19:16:02,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:02,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:16:02,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862010711] [2020-08-18 19:16:02,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:16:02,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:02,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:16:02,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:16:02,082 INFO L87 Difference]: Start difference. First operand 321 states and 367 transitions. Second operand 9 states. [2020-08-18 19:16:02,964 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:16:03,217 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:16:03,441 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:03,676 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:04,599 INFO L93 Difference]: Finished difference Result 732 states and 917 transitions. [2020-08-18 19:16:04,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:16:04,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 19:16:04,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:04,603 INFO L225 Difference]: With dead ends: 732 [2020-08-18 19:16:04,603 INFO L226 Difference]: Without dead ends: 435 [2020-08-18 19:16:04,605 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 [2020-08-18 19:16:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-18 19:16:04,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 331. [2020-08-18 19:16:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-18 19:16:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 377 transitions. [2020-08-18 19:16:04,689 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 377 transitions. Word has length 94 [2020-08-18 19:16:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:04,690 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 377 transitions. [2020-08-18 19:16:04,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:16:04,690 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 377 transitions. [2020-08-18 19:16:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:16:04,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:04,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:04,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:16:04,693 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:04,693 INFO L82 PathProgramCache]: Analyzing trace with hash -234947757, now seen corresponding path program 1 times [2020-08-18 19:16:04,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:04,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106521391] [2020-08-18 19:16:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,927 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:04,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:16:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:16:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:16:05,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106521391] [2020-08-18 19:16:05,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:05,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:16:05,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220544852] [2020-08-18 19:16:05,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:16:05,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:05,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:16:05,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:16:05,067 INFO L87 Difference]: Start difference. First operand 331 states and 377 transitions. Second operand 11 states. [2020-08-18 19:16:05,512 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:05,748 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:05,992 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:06,601 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:06,837 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:07,064 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:16:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:08,067 INFO L93 Difference]: Finished difference Result 752 states and 939 transitions. [2020-08-18 19:16:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:16:08,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-18 19:16:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:08,077 INFO L225 Difference]: With dead ends: 752 [2020-08-18 19:16:08,077 INFO L226 Difference]: Without dead ends: 445 [2020-08-18 19:16:08,079 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 [2020-08-18 19:16:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-18 19:16:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 339. [2020-08-18 19:16:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-08-18 19:16:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 385 transitions. [2020-08-18 19:16:08,142 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 385 transitions. Word has length 94 [2020-08-18 19:16:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:08,142 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 385 transitions. [2020-08-18 19:16:08,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:16:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 385 transitions. [2020-08-18 19:16:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:16:08,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:08,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:08,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:16:08,145 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1735991700, now seen corresponding path program 1 times [2020-08-18 19:16:08,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:08,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690063600] [2020-08-18 19:16:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,413 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 19:16:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:16:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:16:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:16:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:16:08,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690063600] [2020-08-18 19:16:08,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:16:08,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:16:08,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807904596] [2020-08-18 19:16:08,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:16:08,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:08,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:16:08,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:16:08,539 INFO L87 Difference]: Start difference. First operand 339 states and 385 transitions. Second operand 7 states. [2020-08-18 19:16:09,000 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:09,650 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:11,832 INFO L93 Difference]: Finished difference Result 1074 states and 1381 transitions. [2020-08-18 19:16:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:16:11,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-08-18 19:16:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:11,840 INFO L225 Difference]: With dead ends: 1074 [2020-08-18 19:16:11,840 INFO L226 Difference]: Without dead ends: 759 [2020-08-18 19:16:11,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:16:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-08-18 19:16:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 639. [2020-08-18 19:16:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-08-18 19:16:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 751 transitions. [2020-08-18 19:16:11,998 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 751 transitions. Word has length 94 [2020-08-18 19:16:12,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:12,000 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 751 transitions. [2020-08-18 19:16:12,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:16:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 751 transitions. [2020-08-18 19:16:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 19:16:12,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:12,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:12,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:16:12,007 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:12,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1966005102, now seen corresponding path program 1 times [2020-08-18 19:16:12,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:12,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962561489] [2020-08-18 19:16:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,279 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:16:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:16:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:16:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:16:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:16:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:16:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:16:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:16:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:16:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:16:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:16:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:16:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:16:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 19:16:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:16:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:16:12,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962561489] [2020-08-18 19:16:12,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:16:12,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 19:16:12,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371333950] [2020-08-18 19:16:12,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 19:16:12,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:16:12,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 19:16:12,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 19:16:12,663 INFO L87 Difference]: Start difference. First operand 639 states and 751 transitions. Second operand 17 states. [2020-08-18 19:16:13,248 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:13,564 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:13,853 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:14,101 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:14,785 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:16:15,811 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:16,165 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:16,474 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:16,748 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:17,120 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:17,422 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:16:18,007 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 19:16:18,570 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 19:16:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:16:20,209 INFO L93 Difference]: Finished difference Result 1339 states and 1649 transitions. [2020-08-18 19:16:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 19:16:20,210 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-18 19:16:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:16:20,215 INFO L225 Difference]: With dead ends: 1339 [2020-08-18 19:16:20,215 INFO L226 Difference]: Without dead ends: 724 [2020-08-18 19:16:20,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=315, Invalid=1245, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 19:16:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-08-18 19:16:20,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 607. [2020-08-18 19:16:20,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-18 19:16:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 700 transitions. [2020-08-18 19:16:20,325 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 700 transitions. Word has length 98 [2020-08-18 19:16:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:16:20,326 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 700 transitions. [2020-08-18 19:16:20,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 19:16:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 700 transitions. [2020-08-18 19:16:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 19:16:20,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:16:20,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:16:20,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:16:20,330 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:16:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:16:20,330 INFO L82 PathProgramCache]: Analyzing trace with hash 451842310, now seen corresponding path program 1 times [2020-08-18 19:16:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:16:20,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497701197] [2020-08-18 19:16:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:16:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:16:20,397 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:16:20,397 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:16:20,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:16:20,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:16:20 BoogieIcfgContainer [2020-08-18 19:16:20,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:16:20,430 INFO L168 Benchmark]: Toolchain (without parser) took 37280.14 ms. Allocated memory was 149.9 MB in the beginning and 612.4 MB in the end (delta: 462.4 MB). Free memory was 104.8 MB in the beginning and 471.2 MB in the end (delta: -366.5 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:20,431 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 149.9 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 19:16:20,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.34 ms. Allocated memory was 149.9 MB in the beginning and 205.5 MB in the end (delta: 55.6 MB). Free memory was 104.6 MB in the beginning and 174.0 MB in the end (delta: -69.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:20,432 INFO L168 Benchmark]: Boogie Preprocessor took 114.09 ms. Allocated memory is still 205.5 MB. Free memory was 173.4 MB in the beginning and 169.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:20,433 INFO L168 Benchmark]: RCFGBuilder took 1161.87 ms. Allocated memory was 205.5 MB in the beginning and 232.8 MB in the end (delta: 27.3 MB). Free memory was 169.6 MB in the beginning and 188.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:20,433 INFO L168 Benchmark]: TraceAbstraction took 35288.84 ms. Allocated memory was 232.8 MB in the beginning and 612.4 MB in the end (delta: 379.6 MB). Free memory was 188.0 MB in the beginning and 471.2 MB in the end (delta: -283.3 MB). Peak memory consumption was 96.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:16:20,436 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 149.9 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.34 ms. Allocated memory was 149.9 MB in the beginning and 205.5 MB in the end (delta: 55.6 MB). Free memory was 104.6 MB in the beginning and 174.0 MB in the end (delta: -69.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.09 ms. Allocated memory is still 205.5 MB. Free memory was 173.4 MB in the beginning and 169.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1161.87 ms. Allocated memory was 205.5 MB in the beginning and 232.8 MB in the end (delta: 27.3 MB). Free memory was 169.6 MB in the beginning and 188.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35288.84 ms. Allocated memory was 232.8 MB in the beginning and 612.4 MB in the end (delta: 379.6 MB). Free memory was 188.0 MB in the beginning and 471.2 MB in the end (delta: -283.3 MB). Peak memory consumption was 96.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 764]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L581] int pumpRunning = 0; [L582] int systemActive = 1; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L824] int retValue_acc ; [L827] retValue_acc = 1 [L828] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L511] int splverifierCounter ; [L512] int tmp ; [L513] int tmp___0 ; [L514] int tmp___1 ; [L515] int tmp___2 ; [L518] splverifierCounter = 0 [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND TRUE \read(tmp) [L532] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L532] RET waterRise() [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp___0)) [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp___1) [L565] CALL timeShift() [L589] COND FALSE !(\read(pumpRunning)) [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND TRUE ! pumpRunning [L623] CALL, EXPR isHighWaterLevel() [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L739] CALL, EXPR isHighWaterSensorDry() [L493] int retValue_acc ; [L496] COND FALSE !(waterLevel < 2) [L500] retValue_acc = 0 [L501] return (retValue_acc); [L739] RET, EXPR isHighWaterSensorDry() [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); [L623] RET, EXPR isHighWaterLevel() [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L627] CALL activatePump() [L652] int tmp ; [L656] CALL, EXPR isMethaneAlarm() [L677] int retValue_acc ; [L681] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); [L656] RET, EXPR isMethaneAlarm() [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L662] CALL activatePump__wrappee__highWaterSensor() [L646] pumpRunning = 1 [L662] RET activatePump__wrappee__highWaterSensor() [L627] RET activatePump() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND FALSE !(\read(tmp)) [L604] RET __utac_acc__Specification1_spec__1() [L565] RET timeShift() [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND FALSE !(\read(tmp)) [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp___0) [L542] CALL changeMethaneLevel() [L443] COND FALSE !(\read(methaneLevelCritical)) [L446] methaneLevelCritical = 1 [L542] RET changeMethaneLevel() [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___2)) [L556] tmp___1 = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp___1) [L565] CALL timeShift() [L589] COND TRUE \read(pumpRunning) [L591] CALL lowerWaterLevel() [L419] COND TRUE waterLevel > 0 [L420] waterLevel = waterLevel - 1 [L591] RET lowerWaterLevel() [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND FALSE !(! pumpRunning) [L636] FCALL processEnvironment__wrappee__base() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND TRUE \read(tmp) [L779] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); [L779] RET, EXPR isPumpRunning() [L779] tmp___0 = isPumpRunning() [L781] COND TRUE \read(tmp___0) [L783] CALL __automaton_fail() [L764] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1190 SDtfs, 2362 SDslu, 1382 SDs, 0 SdLazy, 6739 SolverSat, 1616 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 263 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred 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, 10 MinimizatonAttempts, 748 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 871 NumberOfCodeBlocks, 871 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 727 ConstructedInterpolants, 0 QuantifiedInterpolants, 233536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 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...