/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:08:13,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:08:13,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:08:13,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:08:13,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:08:13,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:08:14,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:08:14,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:08:14,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:08:14,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:08:14,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:08:14,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:08:14,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:08:14,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:08:14,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:08:14,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:08:14,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:08:14,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:08:14,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:08:14,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:08:14,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:08:14,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:08:14,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:08:14,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:08:14,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:08:14,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:08:14,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:08:14,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:08:14,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:08:14,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:08:14,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:08:14,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:08:14,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:08:14,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:08:14,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:08:14,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:08:14,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:08:14,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:08:14,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:08:14,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:08:14,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:08:14,066 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 [2020-08-19 00:08:14,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:08:14,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:08:14,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:08:14,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:08:14,090 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:08:14,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:08:14,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:08:14,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:08:14,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:08:14,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:08:14,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:08:14,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:08:14,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:08:14,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:08:14,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:08:14,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:08:14,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:08:14,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:08:14,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:08:14,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:08:14,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:08:14,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:08:14,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:08:14,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:08:14,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:08:14,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:08:14,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:08:14,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:08:14,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:08:14,095 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:08:14,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:08:14,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:08:14,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:08:14,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:08:14,399 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:08:14,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-19 00:08:14,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c104b65dc/b12fbad1679d40fba8d215ee4659d560/FLAG0a0b9be58 [2020-08-19 00:08:14,991 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:08:14,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-19 00:08:15,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c104b65dc/b12fbad1679d40fba8d215ee4659d560/FLAG0a0b9be58 [2020-08-19 00:08:15,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c104b65dc/b12fbad1679d40fba8d215ee4659d560 [2020-08-19 00:08:15,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:08:15,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:08:15,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:15,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:08:15,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:08:15,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:15,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7bff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15, skipping insertion in model container [2020-08-19 00:08:15,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:15,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:08:15,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:08:15,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:15,727 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:08:15,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:15,966 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:08:15,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15 WrapperNode [2020-08-19 00:08:15,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:15,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:08:15,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:08:15,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:08:15,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:15,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:16,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:16,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:16,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:16,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:16,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (1/1) ... [2020-08-19 00:08:16,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:08:16,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:08:16,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:08:16,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:08:16,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (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 [2020-08-19 00:08:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:08:16,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:08:16,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:08:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:08:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:08:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:08:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:08:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:08:16,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:08:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:08:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:08:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:08:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:08:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:08:16,141 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:08:16,142 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:08:16,142 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:08:16,142 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:08:16,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:08:16,142 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:08:16,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:08:16,143 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:08:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:08:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:08:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:08:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:08:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:08:16,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:08:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:08:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:08:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:08:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:08:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:08:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:08:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:08:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:08:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:08:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:08:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:08:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:08:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:08:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:08:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:08:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:08:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:08:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:08:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:08:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:08:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:08:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:08:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:08:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:08:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:08:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:08:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:08:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:08:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:08:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:08:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:08:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:08:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:08:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:08:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:08:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:08:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:08:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:08:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:08:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:08:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:08:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:08:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:08:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:08:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:08:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:08:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:08:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:08:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:08:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:08:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:08:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:08:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:08:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:08:17,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:08:17,195 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:08:17,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:17 BoogieIcfgContainer [2020-08-19 00:08:17,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:08:17,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:08:17,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:08:17,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:08:17,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:08:15" (1/3) ... [2020-08-19 00:08:17,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65296398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:17, skipping insertion in model container [2020-08-19 00:08:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:15" (2/3) ... [2020-08-19 00:08:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65296398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:17, skipping insertion in model container [2020-08-19 00:08:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:17" (3/3) ... [2020-08-19 00:08:17,210 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-08-19 00:08:17,221 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:08:17,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:08:17,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:08:17,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:08:17,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:08:17,272 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:08:17,272 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:08:17,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:08:17,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:08:17,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:08:17,273 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:08:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 00:08:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:08:17,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:17,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:17,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash 171708589, now seen corresponding path program 1 times [2020-08-19 00:08:17,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:17,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666414263] [2020-08-19 00:08:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,059 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:08:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:08:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:18,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666414263] [2020-08-19 00:08:18,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:18,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:08:18,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777789609] [2020-08-19 00:08:18,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:08:18,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:18,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:08:18,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:18,262 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 00:08:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:19,367 INFO L93 Difference]: Finished difference Result 279 states and 365 transitions. [2020-08-19 00:08:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:08:19,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:08:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:19,383 INFO L225 Difference]: With dead ends: 279 [2020-08-19 00:08:19,384 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 00:08:19,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 00:08:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 123. [2020-08-19 00:08:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 00:08:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-19 00:08:19,473 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 51 [2020-08-19 00:08:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:19,474 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-19 00:08:19,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:08:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-19 00:08:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:08:19,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:19,478 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] [2020-08-19 00:08:19,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:08:19,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:19,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:19,479 INFO L82 PathProgramCache]: Analyzing trace with hash -70243324, now seen corresponding path program 1 times [2020-08-19 00:08:19,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:19,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737709284] [2020-08-19 00:08:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,796 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:08:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:08:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:19,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737709284] [2020-08-19 00:08:19,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:19,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:08:19,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636405618] [2020-08-19 00:08:19,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:08:19,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:19,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:08:19,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:08:19,850 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 5 states. [2020-08-19 00:08:20,297 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:21,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:21,086 INFO L93 Difference]: Finished difference Result 211 states and 262 transitions. [2020-08-19 00:08:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:08:21,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:08:21,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:21,090 INFO L225 Difference]: With dead ends: 211 [2020-08-19 00:08:21,091 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 00:08:21,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:08:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 00:08:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2020-08-19 00:08:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 00:08:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-19 00:08:21,134 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 52 [2020-08-19 00:08:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:21,135 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-19 00:08:21,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:08:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-19 00:08:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:08:21,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:21,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:21,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:08:21,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1406294977, now seen corresponding path program 1 times [2020-08-19 00:08:21,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:21,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509313818] [2020-08-19 00:08:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,475 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:08:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:08:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:21,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509313818] [2020-08-19 00:08:21,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:21,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:08:21,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717503583] [2020-08-19 00:08:21,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:08:21,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:21,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:08:21,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:08:21,566 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 9 states. [2020-08-19 00:08:21,945 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:22,286 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:22,534 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:22,778 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:23,584 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:25,167 INFO L93 Difference]: Finished difference Result 390 states and 490 transitions. [2020-08-19 00:08:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:08:25,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 00:08:25,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:25,172 INFO L225 Difference]: With dead ends: 390 [2020-08-19 00:08:25,173 INFO L226 Difference]: Without dead ends: 304 [2020-08-19 00:08:25,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:08:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-08-19 00:08:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 227. [2020-08-19 00:08:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-08-19 00:08:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2020-08-19 00:08:25,242 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 57 [2020-08-19 00:08:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:25,243 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2020-08-19 00:08:25,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:08:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2020-08-19 00:08:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 00:08:25,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:25,245 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] [2020-08-19 00:08:25,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:08:25,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:25,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1471569046, now seen corresponding path program 1 times [2020-08-19 00:08:25,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:25,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614314915] [2020-08-19 00:08:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,594 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:25,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:08:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:08:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:08:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:25,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614314915] [2020-08-19 00:08:25,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:25,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:08:25,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16111356] [2020-08-19 00:08:25,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:08:25,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:08:25,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:08:25,724 INFO L87 Difference]: Start difference. First operand 227 states and 272 transitions. Second operand 9 states. [2020-08-19 00:08:26,128 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:27,399 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:27,730 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:28,009 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:28,267 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:29,351 INFO L93 Difference]: Finished difference Result 730 states and 972 transitions. [2020-08-19 00:08:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:08:29,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 00:08:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:29,359 INFO L225 Difference]: With dead ends: 730 [2020-08-19 00:08:29,360 INFO L226 Difference]: Without dead ends: 531 [2020-08-19 00:08:29,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:08:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-19 00:08:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 402. [2020-08-19 00:08:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-08-19 00:08:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 484 transitions. [2020-08-19 00:08:29,499 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 484 transitions. Word has length 62 [2020-08-19 00:08:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:29,500 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 484 transitions. [2020-08-19 00:08:29,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:08:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 484 transitions. [2020-08-19 00:08:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 00:08:29,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:29,504 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] [2020-08-19 00:08:29,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:08:29,504 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash -675634618, now seen corresponding path program 1 times [2020-08-19 00:08:29,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:29,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371041962] [2020-08-19 00:08:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,855 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:29,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:08:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:08:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 00:08:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:29,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371041962] [2020-08-19 00:08:29,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:29,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:29,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421795834] [2020-08-19 00:08:29,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:29,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:29,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:29,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:29,958 INFO L87 Difference]: Start difference. First operand 402 states and 484 transitions. Second operand 10 states. [2020-08-19 00:08:30,349 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:31,397 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:31,671 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:31,927 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:32,452 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:33,513 INFO L93 Difference]: Finished difference Result 1162 states and 1576 transitions. [2020-08-19 00:08:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 00:08:33,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 00:08:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:33,522 INFO L225 Difference]: With dead ends: 1162 [2020-08-19 00:08:33,523 INFO L226 Difference]: Without dead ends: 788 [2020-08-19 00:08:33,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:08:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-08-19 00:08:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 593. [2020-08-19 00:08:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-08-19 00:08:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 715 transitions. [2020-08-19 00:08:33,636 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 715 transitions. Word has length 66 [2020-08-19 00:08:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:33,637 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 715 transitions. [2020-08-19 00:08:33,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 715 transitions. [2020-08-19 00:08:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:08:33,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:33,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:33,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:08:33,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1616247053, now seen corresponding path program 1 times [2020-08-19 00:08:33,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:33,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636600084] [2020-08-19 00:08:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,878 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:08:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:08:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:34,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636600084] [2020-08-19 00:08:34,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:34,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:34,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934204285] [2020-08-19 00:08:34,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:34,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:34,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:34,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:34,057 INFO L87 Difference]: Start difference. First operand 593 states and 715 transitions. Second operand 10 states. [2020-08-19 00:08:34,413 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:35,372 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:35,612 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:08:35,869 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:36,172 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:37,887 INFO L93 Difference]: Finished difference Result 2139 states and 3058 transitions. [2020-08-19 00:08:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:08:37,888 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 00:08:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:37,903 INFO L225 Difference]: With dead ends: 2139 [2020-08-19 00:08:37,903 INFO L226 Difference]: Without dead ends: 1574 [2020-08-19 00:08:37,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:08:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2020-08-19 00:08:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1135. [2020-08-19 00:08:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-08-19 00:08:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1372 transitions. [2020-08-19 00:08:38,200 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1372 transitions. Word has length 84 [2020-08-19 00:08:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:38,201 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1372 transitions. [2020-08-19 00:08:38,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1372 transitions. [2020-08-19 00:08:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:08:38,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:38,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:38,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:08:38,207 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:38,208 INFO L82 PathProgramCache]: Analyzing trace with hash 567429874, now seen corresponding path program 1 times [2020-08-19 00:08:38,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:38,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215688617] [2020-08-19 00:08:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,481 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:08:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:08:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:38,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215688617] [2020-08-19 00:08:38,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:38,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:38,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559460297] [2020-08-19 00:08:38,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:38,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:38,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:38,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:38,636 INFO L87 Difference]: Start difference. First operand 1135 states and 1372 transitions. Second operand 10 states. [2020-08-19 00:08:39,721 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:40,040 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:08:40,317 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:40,548 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:41,785 INFO L93 Difference]: Finished difference Result 2694 states and 3601 transitions. [2020-08-19 00:08:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:08:41,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 00:08:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:41,800 INFO L225 Difference]: With dead ends: 2694 [2020-08-19 00:08:41,800 INFO L226 Difference]: Without dead ends: 1587 [2020-08-19 00:08:41,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:08:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-08-19 00:08:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1175. [2020-08-19 00:08:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-08-19 00:08:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1412 transitions. [2020-08-19 00:08:42,056 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1412 transitions. Word has length 84 [2020-08-19 00:08:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:42,058 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1412 transitions. [2020-08-19 00:08:42,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1412 transitions. [2020-08-19 00:08:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:08:42,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:42,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:42,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:08:42,064 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:42,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1953633268, now seen corresponding path program 1 times [2020-08-19 00:08:42,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:42,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689614789] [2020-08-19 00:08:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,348 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:08:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:08:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:42,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689614789] [2020-08-19 00:08:42,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:42,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:08:42,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662386936] [2020-08-19 00:08:42,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:08:42,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:42,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:08:42,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:08:42,515 INFO L87 Difference]: Start difference. First operand 1175 states and 1412 transitions. Second operand 12 states. [2020-08-19 00:08:43,105 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:43,356 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:43,595 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:44,449 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:44,725 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:44,981 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:46,208 INFO L93 Difference]: Finished difference Result 2386 states and 3145 transitions. [2020-08-19 00:08:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:08:46,208 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 00:08:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:46,216 INFO L225 Difference]: With dead ends: 2386 [2020-08-19 00:08:46,216 INFO L226 Difference]: Without dead ends: 1239 [2020-08-19 00:08:46,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:08:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-08-19 00:08:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 951. [2020-08-19 00:08:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-08-19 00:08:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1112 transitions. [2020-08-19 00:08:46,409 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1112 transitions. Word has length 84 [2020-08-19 00:08:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:46,409 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1112 transitions. [2020-08-19 00:08:46,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:08:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1112 transitions. [2020-08-19 00:08:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:08:46,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:46,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:46,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:08:46,413 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:46,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1427109873, now seen corresponding path program 1 times [2020-08-19 00:08:46,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:46,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891422031] [2020-08-19 00:08:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,663 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:08:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:08:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:08:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:08:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:08:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:46,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891422031] [2020-08-19 00:08:46,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:46,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:08:46,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200686193] [2020-08-19 00:08:46,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:08:46,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:08:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:08:46,776 INFO L87 Difference]: Start difference. First operand 951 states and 1112 transitions. Second operand 8 states. [2020-08-19 00:08:47,172 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:49,215 INFO L93 Difference]: Finished difference Result 1906 states and 2527 transitions. [2020-08-19 00:08:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 00:08:49,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-19 00:08:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:49,228 INFO L225 Difference]: With dead ends: 1906 [2020-08-19 00:08:49,228 INFO L226 Difference]: Without dead ends: 1903 [2020-08-19 00:08:49,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:08:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-08-19 00:08:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1456. [2020-08-19 00:08:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-08-19 00:08:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1720 transitions. [2020-08-19 00:08:49,571 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1720 transitions. Word has length 88 [2020-08-19 00:08:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:49,572 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 1720 transitions. [2020-08-19 00:08:49,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:08:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1720 transitions. [2020-08-19 00:08:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 00:08:49,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:49,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 00:08:49,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:08:49,582 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:49,582 INFO L82 PathProgramCache]: Analyzing trace with hash 475998026, now seen corresponding path program 1 times [2020-08-19 00:08:49,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:49,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553257526] [2020-08-19 00:08:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:08:49,656 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:08:49,657 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:08:49,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:08:49,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:08:49 BoogieIcfgContainer [2020-08-19 00:08:49,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:08:49,714 INFO L168 Benchmark]: Toolchain (without parser) took 34399.70 ms. Allocated memory was 147.8 MB in the beginning and 689.4 MB in the end (delta: 541.6 MB). Free memory was 103.1 MB in the beginning and 127.4 MB in the end (delta: -24.4 MB). Peak memory consumption was 517.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:08:49,715 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:08:49,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.12 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 102.8 MB in the beginning and 175.5 MB in the end (delta: -72.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:08:49,723 INFO L168 Benchmark]: Boogie Preprocessor took 92.01 ms. Allocated memory is still 206.0 MB. Free memory was 175.5 MB in the beginning and 171.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:08:49,725 INFO L168 Benchmark]: RCFGBuilder took 1141.39 ms. Allocated memory was 206.0 MB in the beginning and 235.4 MB in the end (delta: 29.4 MB). Free memory was 171.2 MB in the beginning and 196.3 MB in the end (delta: -25.1 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:08:49,728 INFO L168 Benchmark]: TraceAbstraction took 32505.61 ms. Allocated memory was 235.4 MB in the beginning and 689.4 MB in the end (delta: 454.0 MB). Free memory was 194.9 MB in the beginning and 127.4 MB in the end (delta: 67.5 MB). Peak memory consumption was 521.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:08:49,732 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 656.12 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 102.8 MB in the beginning and 175.5 MB in the end (delta: -72.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.01 ms. Allocated memory is still 206.0 MB. Free memory was 175.5 MB in the beginning and 171.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1141.39 ms. Allocated memory was 206.0 MB in the beginning and 235.4 MB in the end (delta: 29.4 MB). Free memory was 171.2 MB in the beginning and 196.3 MB in the end (delta: -25.1 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32505.61 ms. Allocated memory was 235.4 MB in the beginning and 689.4 MB in the end (delta: 454.0 MB). Free memory was 194.9 MB in the beginning and 127.4 MB in the end (delta: 67.5 MB). Peak memory consumption was 521.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L630] RET, EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L616] CALL __utac_acc__Specification2_spec__1() [L910] methAndRunningLastTime = 0 [L616] RET __utac_acc__Specification2_spec__1() [L617] CALL test() [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) [L849] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L849] RET waterRise() [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) [L859] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L859] RET changeMethaneLevel() [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; [L791] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L791] RET, EXPR isHighWaterSensorDry() [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L716] pumpRunning = 1 [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 [L674] RET __utac_acc__Specification2_spec__2() [L884] RET timeShift() [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND TRUE \read(methAndRunningLastTime) [L929] CALL __automaton_fail() [L900] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.3s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 26.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 958 SDtfs, 2942 SDslu, 1442 SDs, 0 SdLazy, 6218 SolverSat, 2311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1456occurred 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: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 2054 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 759 NumberOfCodeBlocks, 759 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 192303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...