/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:52:09,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:52:09,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:52:10,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:52:10,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:52:10,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:52:10,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:52:10,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:52:10,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:52:10,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:52:10,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:52:10,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:52:10,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:52:10,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:52:10,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:52:10,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:52:10,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:52:10,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:52:10,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:52:10,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:52:10,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:52:10,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:52:10,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:52:10,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:52:10,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:52:10,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:52:10,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:52:10,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:52:10,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:52:10,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:52:10,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:52:10,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:52:10,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:52:10,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:52:10,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:52:10,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:52:10,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:52:10,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:52:10,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:52:10,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:52:10,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:52:10,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:52:10,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:52:10,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:52:10,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:52:10,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:52:10,062 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:52:10,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:52:10,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:52:10,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:52:10,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:52:10,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:52:10,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:52:10,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:52:10,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:52:10,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:52:10,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:52:10,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:52:10,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:52:10,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:52:10,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:52:10,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:52:10,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:52:10,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:52:10,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:52:10,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:52:10,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:52:10,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:52:10,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:52:10,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:52:10,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:52:10,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:52:10,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:52:10,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:52:10,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:52:10,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:52:10,419 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:52:10,419 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-22 02:52:10,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f4c1284/75c2b69c8738424a94e8ef6084e5bc64/FLAGbf9ad676a [2020-08-22 02:52:11,059 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:52:11,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-22 02:52:11,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f4c1284/75c2b69c8738424a94e8ef6084e5bc64/FLAGbf9ad676a [2020-08-22 02:52:11,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f4c1284/75c2b69c8738424a94e8ef6084e5bc64 [2020-08-22 02:52:11,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:52:11,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:52:11,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:52:11,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:52:11,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:52:11,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:52:11" (1/1) ... [2020-08-22 02:52:11,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3ae440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:11, skipping insertion in model container [2020-08-22 02:52:11,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:52:11" (1/1) ... [2020-08-22 02:52:11,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:52:11,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:52:11,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:52:11,913 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:52:12,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:52:12,035 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:52:12,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12 WrapperNode [2020-08-22 02:52:12,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:52:12,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:52:12,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:52:12,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:52:12,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... [2020-08-22 02:52:12,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... [2020-08-22 02:52:12,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... [2020-08-22 02:52:12,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... [2020-08-22 02:52:12,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... [2020-08-22 02:52:12,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... [2020-08-22 02:52:12,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... [2020-08-22 02:52:12,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:52:12,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:52:12,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:52:12,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:52:12,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:52:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:52:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:52:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:52:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:52:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:52:12,195 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:52:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:52:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:52:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:52:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:52:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:52:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:52:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:52:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:52:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:52:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:52:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:52:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:52:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:52:12,200 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:52:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:52:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:52:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:52:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:52:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:52:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:52:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:52:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:52:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:52:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:52:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:52:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:52:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:52:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:52:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:52:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:52:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:52:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:52:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:52:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:52:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:52:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:52:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:52:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:52:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:52:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:52:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:52:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:52:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:52:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:52:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:52:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:52:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:52:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:52:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:52:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:52:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:52:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:52:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:52:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:52:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:52:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:52:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:52:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:52:12,213 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:52:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:52:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:52:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:52:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:52:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:52:12,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:52:13,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:52:13,320 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:52:13,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:52:13 BoogieIcfgContainer [2020-08-22 02:52:13,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:52:13,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:52:13,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:52:13,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:52:13,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:52:11" (1/3) ... [2020-08-22 02:52:13,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e48272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:52:13, skipping insertion in model container [2020-08-22 02:52:13,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:12" (2/3) ... [2020-08-22 02:52:13,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e48272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:52:13, skipping insertion in model container [2020-08-22 02:52:13,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:52:13" (3/3) ... [2020-08-22 02:52:13,341 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-08-22 02:52:13,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:52:13,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:52:13,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:52:13,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:52:13,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:52:13,398 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:52:13,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:52:13,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:52:13,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:52:13,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:52:13,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:52:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-22 02:52:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:52:13,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:13,434 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] [2020-08-22 02:52:13,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:13,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-08-22 02:52:13,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:13,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106086893] [2020-08-22 02:52:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,111 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:14,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:52:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:52:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:52:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:14,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106086893] [2020-08-22 02:52:14,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:14,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:52:14,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634978662] [2020-08-22 02:52:14,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:52:14,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:14,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:52:14,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:52:14,242 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-22 02:52:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:15,330 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-08-22 02:52:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:52:15,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 02:52:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:15,348 INFO L225 Difference]: With dead ends: 282 [2020-08-22 02:52:15,348 INFO L226 Difference]: Without dead ends: 153 [2020-08-22 02:52:15,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:52:15,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-22 02:52:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-08-22 02:52:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 02:52:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-22 02:52:15,442 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-22 02:52:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:15,443 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-22 02:52:15,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:52:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-22 02:52:15,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 02:52:15,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:15,447 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] [2020-08-22 02:52:15,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:52:15,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:15,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002315, now seen corresponding path program 1 times [2020-08-22 02:52:15,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:15,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172274145] [2020-08-22 02:52:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,783 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:52:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:52:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:52:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:15,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172274145] [2020-08-22 02:52:15,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:15,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:52:15,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142964659] [2020-08-22 02:52:15,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:52:15,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:15,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:52:15,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:52:15,834 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-22 02:52:16,245 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:52:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:16,987 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-22 02:52:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:52:16,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 02:52:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:16,992 INFO L225 Difference]: With dead ends: 205 [2020-08-22 02:52:16,992 INFO L226 Difference]: Without dead ends: 137 [2020-08-22 02:52:16,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:52:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-22 02:52:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-08-22 02:52:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 02:52:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-22 02:52:17,032 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-22 02:52:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:17,033 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-22 02:52:17,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:52:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-22 02:52:17,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 02:52:17,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:17,036 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] [2020-08-22 02:52:17,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:52:17,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:17,037 INFO L82 PathProgramCache]: Analyzing trace with hash -979616740, now seen corresponding path program 1 times [2020-08-22 02:52:17,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:17,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913077591] [2020-08-22 02:52:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,377 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:52:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:52:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:52:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:17,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913077591] [2020-08-22 02:52:17,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:17,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:52:17,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626258109] [2020-08-22 02:52:17,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:52:17,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:17,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:52:17,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:52:17,475 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-22 02:52:17,820 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:52:18,132 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:18,405 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:18,643 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:19,412 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:52:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:21,054 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-08-22 02:52:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:52:21,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 02:52:21,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:21,068 INFO L225 Difference]: With dead ends: 390 [2020-08-22 02:52:21,068 INFO L226 Difference]: Without dead ends: 303 [2020-08-22 02:52:21,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:52:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-22 02:52:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-08-22 02:52:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-22 02:52:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-08-22 02:52:21,157 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-08-22 02:52:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:21,158 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-08-22 02:52:21,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:52:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-08-22 02:52:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 02:52:21,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:21,162 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] [2020-08-22 02:52:21,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:52:21,162 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:21,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1983050375, now seen corresponding path program 1 times [2020-08-22 02:52:21,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:21,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110730174] [2020-08-22 02:52:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,493 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:52:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:52:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:52:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:52:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:21,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110730174] [2020-08-22 02:52:21,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:21,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:52:21,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069084596] [2020-08-22 02:52:21,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:52:21,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:21,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:52:21,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:52:21,609 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-08-22 02:52:21,986 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:52:23,282 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:23,588 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:23,852 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:24,113 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:52:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:24,794 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-08-22 02:52:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:52:24,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 02:52:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:24,803 INFO L225 Difference]: With dead ends: 741 [2020-08-22 02:52:24,804 INFO L226 Difference]: Without dead ends: 523 [2020-08-22 02:52:24,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:52:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-22 02:52:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-08-22 02:52:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-22 02:52:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-08-22 02:52:24,913 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-08-22 02:52:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:24,914 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-08-22 02:52:24,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:52:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-08-22 02:52:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 02:52:24,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:24,919 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] [2020-08-22 02:52:24,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:52:24,920 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:24,920 INFO L82 PathProgramCache]: Analyzing trace with hash -572770771, now seen corresponding path program 1 times [2020-08-22 02:52:24,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:24,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7434215] [2020-08-22 02:52:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,208 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:25,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:52:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:52:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:52:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:52:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 02:52:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:25,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7434215] [2020-08-22 02:52:25,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:25,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:52:25,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98436466] [2020-08-22 02:52:25,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:52:25,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:25,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:52:25,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:52:25,304 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-08-22 02:52:25,668 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:52:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:26,510 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-08-22 02:52:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:52:26,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-22 02:52:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:26,514 INFO L225 Difference]: With dead ends: 806 [2020-08-22 02:52:26,514 INFO L226 Difference]: Without dead ends: 373 [2020-08-22 02:52:26,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:52:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-08-22 02:52:26,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-08-22 02:52:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-22 02:52:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-08-22 02:52:26,584 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-08-22 02:52:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:26,584 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-08-22 02:52:26,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:52:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-08-22 02:52:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 02:52:26,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:26,587 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] [2020-08-22 02:52:26,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:52:26,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:26,587 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-08-22 02:52:26,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:26,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779020953] [2020-08-22 02:52:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:52:26,641 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:52:26,641 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:52:26,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:52:26,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:52:26 BoogieIcfgContainer [2020-08-22 02:52:26,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:52:26,675 INFO L168 Benchmark]: Toolchain (without parser) took 15318.46 ms. Allocated memory was 146.3 MB in the beginning and 441.5 MB in the end (delta: 295.2 MB). Free memory was 101.0 MB in the beginning and 147.8 MB in the end (delta: -46.8 MB). Peak memory consumption was 248.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:26,676 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:52:26,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.30 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:26,678 INFO L168 Benchmark]: Boogie Preprocessor took 86.84 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:26,679 INFO L168 Benchmark]: RCFGBuilder took 1206.65 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.3 MB in the beginning and 194.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:26,679 INFO L168 Benchmark]: TraceAbstraction took 13339.83 ms. Allocated memory was 236.5 MB in the beginning and 441.5 MB in the end (delta: 205.0 MB). Free memory was 194.2 MB in the beginning and 147.8 MB in the end (delta: 46.5 MB). Peak memory consumption was 251.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:26,683 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.30 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.84 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1206.65 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.3 MB in the beginning and 194.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13339.83 ms. Allocated memory was 236.5 MB in the beginning and 441.5 MB in the end (delta: 205.0 MB). Free memory was 194.2 MB in the beginning and 147.8 MB in the end (delta: 46.5 MB). Peak memory consumption was 251.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L522] int retValue_acc ; [L523] int tmp ; [L527] FCALL select_helpers() [L528] FCALL select_features() [L529] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L529] RET, EXPR valid_product() [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) [L533] FCALL setup() [L534] CALL runTest() [L516] CALL test() [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 [L775] COND TRUE 1 [L777] COND TRUE splverifierCounter < 4 [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) [L787] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L787] RET waterRise() [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) [L815] CALL stopSystem() [L745] COND FALSE !(\read(pumpRunning)) [L752] systemActive = 0 [L815] RET stopSystem() [L822] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND FALSE !(\read(systemActive)) [L612] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L927] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 843 SDslu, 385 SDs, 0 SdLazy, 1890 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...