/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:18:31,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:18:31,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:18:32,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:18:32,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:18:32,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:18:32,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:18:32,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:18:32,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:18:32,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:18:32,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:18:32,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:18:32,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:18:32,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:18:32,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:18:32,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:18:32,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:18:32,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:18:32,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:18:32,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:18:32,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:18:32,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:18:32,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:18:32,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:18:32,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:18:32,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:18:32,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:18:32,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:18:32,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:18:32,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:18:32,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:18:32,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:18:32,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:18:32,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:18:32,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:18:32,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:18:32,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:18:32,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:18:32,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:18:32,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:18:32,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:18:32,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:18:32,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:18:32,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:18:32,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:18:32,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:18:32,078 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:18:32,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:18:32,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:18:32,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:18:32,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:18:32,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:18:32,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:18:32,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:18:32,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:18:32,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:18:32,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:18:32,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:18:32,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:18:32,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:18:32,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:18:32,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:18:32,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:18:32,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:18:32,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:18:32,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:18:32,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:18:32,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:18:32,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:18:32,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:18:32,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:18:32,086 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 -> false [2020-08-18 10:18:32,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:18:32,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:18:32,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:18:32,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:18:32,410 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:18:32,411 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-18 10:18:32,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f359ceb76/e14cc740daa84827b4dc02d61d746998/FLAG96fa7c9b3 [2020-08-18 10:18:32,982 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:18:32,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-18 10:18:32,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f359ceb76/e14cc740daa84827b4dc02d61d746998/FLAG96fa7c9b3 [2020-08-18 10:18:33,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f359ceb76/e14cc740daa84827b4dc02d61d746998 [2020-08-18 10:18:33,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:18:33,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:18:33,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:18:33,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:18:33,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:18:33,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137551ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33, skipping insertion in model container [2020-08-18 10:18:33,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:18:33,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:18:33,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:18:33,930 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:18:34,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:18:34,047 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:18:34,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34 WrapperNode [2020-08-18 10:18:34,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:18:34,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:18:34,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:18:34,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:18:34,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... [2020-08-18 10:18:34,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... [2020-08-18 10:18:34,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... [2020-08-18 10:18:34,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... [2020-08-18 10:18:34,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... [2020-08-18 10:18:34,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... [2020-08-18 10:18:34,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... [2020-08-18 10:18:34,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:18:34,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:18:34,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:18:34,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:18:34,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:18:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:18:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:18:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:18:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:18:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:18:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:18:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:18:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:18:34,228 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:18:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:18:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:18:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:18:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:18:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:18:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:18:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:18:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:18:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:18:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:18:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:18:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:18:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:18:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:18:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:18:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:18:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:18:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:18:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:18:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:18:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:18:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:18:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:18:34,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:18:34,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:18:34,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:18:34,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:18:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:18:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:18:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:18:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:18:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:18:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:18:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:18:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:18:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:18:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:18:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:18:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:18:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:18:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:18:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:18:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:18:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:18:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:18:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:18:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:18:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:18:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:18:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:18:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:18:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:18:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:18:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:18:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:18:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:18:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:18:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:18:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:18:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:18:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:18:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:18:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:18:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:18:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:18:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:18:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:18:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:18:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:18:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:18:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:18:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:18:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:18:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:18:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:18:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:18:35,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:18:35,550 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:18:35,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:18:35 BoogieIcfgContainer [2020-08-18 10:18:35,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:18:35,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:18:35,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:18:35,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:18:35,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:18:33" (1/3) ... [2020-08-18 10:18:35,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870dde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:18:35, skipping insertion in model container [2020-08-18 10:18:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:34" (2/3) ... [2020-08-18 10:18:35,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870dde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:18:35, skipping insertion in model container [2020-08-18 10:18:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:18:35" (3/3) ... [2020-08-18 10:18:35,564 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-08-18 10:18:35,575 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:18:35,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:18:35,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:18:35,623 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:18:35,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:18:35,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:18:35,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:18:35,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:18:35,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:18:35,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:18:35,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:18:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-18 10:18:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:18:35,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:35,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:35,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:35,671 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-08-18 10:18:35,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:35,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041489787] [2020-08-18 10:18:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,347 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:18:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:18:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:36,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041489787] [2020-08-18 10:18:36,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:36,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:18:36,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329504007] [2020-08-18 10:18:36,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:18:36,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:36,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:18:36,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:18:36,502 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-18 10:18:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:37,716 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-18 10:18:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:18:37,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:18:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:37,733 INFO L225 Difference]: With dead ends: 338 [2020-08-18 10:18:37,734 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 10:18:37,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:18:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 10:18:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-18 10:18:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 10:18:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-08-18 10:18:37,844 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-08-18 10:18:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:37,845 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-08-18 10:18:37,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:18:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-08-18 10:18:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:18:37,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:37,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:37,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:18:37,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:37,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-08-18 10:18:37,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:37,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443898932] [2020-08-18 10:18:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,259 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:18:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:18:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:38,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443898932] [2020-08-18 10:18:38,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:38,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:18:38,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391794204] [2020-08-18 10:18:38,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:18:38,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:38,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:18:38,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:18:38,307 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-08-18 10:18:38,730 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:39,648 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-18 10:18:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:18:39,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:18:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:39,652 INFO L225 Difference]: With dead ends: 267 [2020-08-18 10:18:39,652 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 10:18:39,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:18:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 10:18:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 10:18:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 10:18:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-18 10:18:39,719 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-08-18 10:18:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:39,719 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-18 10:18:39,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:18:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-18 10:18:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:18:39,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:39,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:39,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:18:39,722 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-08-18 10:18:39,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:39,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058550078] [2020-08-18 10:18:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,024 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:18:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:18:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:40,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058550078] [2020-08-18 10:18:40,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:40,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:40,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659359311] [2020-08-18 10:18:40,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:40,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:40,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:40,122 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-08-18 10:18:40,501 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:40,849 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:41,088 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:41,334 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:42,665 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-08-18 10:18:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:18:42,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 10:18:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:42,673 INFO L225 Difference]: With dead ends: 280 [2020-08-18 10:18:42,673 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 10:18:42,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:18:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 10:18:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 10:18:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 10:18:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-08-18 10:18:42,720 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-08-18 10:18:42,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:42,721 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-08-18 10:18:42,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-08-18 10:18:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 10:18:42,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:42,728 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] [2020-08-18 10:18:42,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:18:42,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:42,728 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-08-18 10:18:42,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:42,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343614135] [2020-08-18 10:18:42,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,117 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:43,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:18:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 10:18:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 10:18:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:43,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343614135] [2020-08-18 10:18:43,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:43,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:18:43,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356739060] [2020-08-18 10:18:43,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:18:43,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:43,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:18:43,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:18:43,201 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-08-18 10:18:43,532 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:44,726 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:45,494 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-08-18 10:18:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:18:45,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-18 10:18:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:45,498 INFO L225 Difference]: With dead ends: 383 [2020-08-18 10:18:45,499 INFO L226 Difference]: Without dead ends: 269 [2020-08-18 10:18:45,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:18:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-18 10:18:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-18 10:18:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-18 10:18:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-08-18 10:18:45,553 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-08-18 10:18:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:45,553 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-08-18 10:18:45,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:18:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-08-18 10:18:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:18:45,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:45,555 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] [2020-08-18 10:18:45,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:18:45,556 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:45,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-08-18 10:18:45,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:45,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948679234] [2020-08-18 10:18:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,865 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:45,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:18:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:18:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:18:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:46,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948679234] [2020-08-18 10:18:46,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:46,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:18:46,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239262577] [2020-08-18 10:18:46,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:18:46,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:46,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:18:46,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:18:46,007 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 10 states. [2020-08-18 10:18:46,568 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:46,808 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:47,041 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:47,663 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:47,907 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:48,136 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:49,245 INFO L93 Difference]: Finished difference Result 472 states and 571 transitions. [2020-08-18 10:18:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:18:49,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-18 10:18:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:49,249 INFO L225 Difference]: With dead ends: 472 [2020-08-18 10:18:49,250 INFO L226 Difference]: Without dead ends: 270 [2020-08-18 10:18:49,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:18:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-18 10:18:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 230. [2020-08-18 10:18:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-18 10:18:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2020-08-18 10:18:49,297 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 84 [2020-08-18 10:18:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:49,297 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2020-08-18 10:18:49,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:18:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2020-08-18 10:18:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:18:49,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:49,299 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] [2020-08-18 10:18:49,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:18:49,299 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:49,299 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-08-18 10:18:49,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:49,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895396363] [2020-08-18 10:18:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,619 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:18:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:18:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:18:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:49,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895396363] [2020-08-18 10:18:49,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:49,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:49,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980702591] [2020-08-18 10:18:49,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:49,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:49,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:49,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:49,740 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand 8 states. [2020-08-18 10:18:50,093 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:51,261 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:51,535 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:51,779 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:52,005 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:52,306 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:53,552 INFO L93 Difference]: Finished difference Result 688 states and 836 transitions. [2020-08-18 10:18:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:18:53,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 10:18:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:53,563 INFO L225 Difference]: With dead ends: 688 [2020-08-18 10:18:53,563 INFO L226 Difference]: Without dead ends: 482 [2020-08-18 10:18:53,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:18:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-18 10:18:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 415. [2020-08-18 10:18:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-18 10:18:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 470 transitions. [2020-08-18 10:18:53,668 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 470 transitions. Word has length 84 [2020-08-18 10:18:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:53,668 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 470 transitions. [2020-08-18 10:18:53,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 470 transitions. [2020-08-18 10:18:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:18:53,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:53,670 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] [2020-08-18 10:18:53,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:18:53,671 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:53,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:53,671 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-08-18 10:18:53,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:53,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942398813] [2020-08-18 10:18:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,968 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:53,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:18:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:18:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:54,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942398813] [2020-08-18 10:18:54,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:54,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:54,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022955977] [2020-08-18 10:18:54,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:54,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:54,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:54,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:54,132 INFO L87 Difference]: Start difference. First operand 415 states and 470 transitions. Second operand 9 states. [2020-08-18 10:18:54,549 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:55,680 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:55,903 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:56,172 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:56,455 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:56,705 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:57,621 INFO L93 Difference]: Finished difference Result 524 states and 650 transitions. [2020-08-18 10:18:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:18:57,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 10:18:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:57,629 INFO L225 Difference]: With dead ends: 524 [2020-08-18 10:18:57,630 INFO L226 Difference]: Without dead ends: 521 [2020-08-18 10:18:57,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:18:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-08-18 10:18:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 415. [2020-08-18 10:18:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-18 10:18:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 469 transitions. [2020-08-18 10:18:57,708 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 469 transitions. Word has length 88 [2020-08-18 10:18:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:57,709 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 469 transitions. [2020-08-18 10:18:57,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:18:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 469 transitions. [2020-08-18 10:18:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 10:18:57,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:57,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:57,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:18:57,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:57,711 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-08-18 10:18:57,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:57,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254523685] [2020-08-18 10:18:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,944 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:58,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:18:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 10:18:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:58,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254523685] [2020-08-18 10:18:58,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:58,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:58,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685946687] [2020-08-18 10:18:58,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:58,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:58,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:58,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:58,095 INFO L87 Difference]: Start difference. First operand 415 states and 469 transitions. Second operand 9 states. [2020-08-18 10:18:58,961 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:59,202 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:18:59,444 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:59,678 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:19:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:00,886 INFO L93 Difference]: Finished difference Result 916 states and 1112 transitions. [2020-08-18 10:19:00,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:19:00,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-18 10:19:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:00,892 INFO L225 Difference]: With dead ends: 916 [2020-08-18 10:19:00,893 INFO L226 Difference]: Without dead ends: 525 [2020-08-18 10:19:00,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:19:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-08-18 10:19:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-08-18 10:19:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-18 10:19:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-08-18 10:19:00,967 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-08-18 10:19:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:00,968 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-08-18 10:19:00,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:19:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-08-18 10:19:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 10:19:00,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:00,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:00,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:19:00,970 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:00,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-08-18 10:19:00,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:00,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023670855] [2020-08-18 10:19:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,235 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:19:01,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:19:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:19:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:19:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:19:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:19:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:19:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 10:19:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:19:01,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023670855] [2020-08-18 10:19:01,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:01,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:19:01,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758259577] [2020-08-18 10:19:01,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:19:01,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:01,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:19:01,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:19:01,366 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 7 states. [2020-08-18 10:19:01,743 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:19:02,263 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:19:04,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:04,838 INFO L93 Difference]: Finished difference Result 1286 states and 1638 transitions. [2020-08-18 10:19:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:19:04,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-08-18 10:19:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:04,849 INFO L225 Difference]: With dead ends: 1286 [2020-08-18 10:19:04,850 INFO L226 Difference]: Without dead ends: 885 [2020-08-18 10:19:04,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:19:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-18 10:19:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-08-18 10:19:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-18 10:19:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 897 transitions. [2020-08-18 10:19:05,096 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 897 transitions. Word has length 89 [2020-08-18 10:19:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:05,097 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 897 transitions. [2020-08-18 10:19:05,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:19:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 897 transitions. [2020-08-18 10:19:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:19:05,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:05,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:05,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:19:05,102 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:05,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-08-18 10:19:05,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:05,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872872209] [2020-08-18 10:19:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:19:05,162 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:19:05,162 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:19:05,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:19:05,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:19:05 BoogieIcfgContainer [2020-08-18 10:19:05,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:19:05,214 INFO L168 Benchmark]: Toolchain (without parser) took 31858.89 ms. Allocated memory was 138.9 MB in the beginning and 660.6 MB in the end (delta: 521.7 MB). Free memory was 101.1 MB in the beginning and 517.5 MB in the end (delta: -416.4 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:05,215 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-18 10:19:05,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.35 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 168.7 MB in the end (delta: -67.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:05,222 INFO L168 Benchmark]: Boogie Preprocessor took 105.69 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 163.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:05,223 INFO L168 Benchmark]: RCFGBuilder took 1401.07 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 163.7 MB in the beginning and 191.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:05,226 INFO L168 Benchmark]: TraceAbstraction took 29651.70 ms. Allocated memory was 234.9 MB in the beginning and 660.6 MB in the end (delta: 425.7 MB). Free memory was 191.3 MB in the beginning and 517.5 MB in the end (delta: -326.2 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:05,235 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.35 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 168.7 MB in the end (delta: -67.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.69 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 163.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1401.07 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 163.7 MB in the beginning and 191.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29651.70 ms. Allocated memory was 234.9 MB in the beginning and 660.6 MB in the end (delta: 425.7 MB). Free memory was 191.3 MB in the beginning and 517.5 MB in the end (delta: -326.2 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 [L155] COND TRUE 1 [L157] COND TRUE splverifierCounter < 4 [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) [L167] CALL waterRise() [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 [L167] RET waterRise() [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) [L177] CALL changeMethaneLevel() [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 [L177] RET changeMethaneLevel() [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) [L200] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(\read(pumpRunning)) [L336] CALL processEnvironment__wrappee__lowWaterSensor() [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L310] CALL processEnvironment__wrappee__highWaterSensor() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L969] int retValue_acc ; [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L346] pumpRunning = 1 [L275] RET activatePump() [L310] RET processEnvironment__wrappee__highWaterSensor() [L336] RET processEnvironment__wrappee__lowWaterSensor() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification1_spec__1() [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isMethaneLevelCritical() [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); [L502] RET, EXPR isMethaneLevelCritical() [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L506] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L506] RET, EXPR isPumpRunning() [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) [L510] CALL __automaton_fail() [L216] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1218 SDtfs, 2058 SDslu, 1108 SDs, 0 SdLazy, 5503 SolverSat, 1364 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 567 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 742 NumberOfCodeBlocks, 742 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 202853 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...