/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -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 18:27:53,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:27:53,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:27:53,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:27:53,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:27:53,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:27:53,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:27:53,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:27:53,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:27:53,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:27:53,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:27:53,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:27:53,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:27:53,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:27:53,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:27:53,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:27:53,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:27:53,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:27:53,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:27:53,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:27:54,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:27:54,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:27:54,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:27:54,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:27:54,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:27:54,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:27:54,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:27:54,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:27:54,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:27:54,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:27:54,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:27:54,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:27:54,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:27:54,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:27:54,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:27:54,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:27:54,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:27:54,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:27:54,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:27:54,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:27:54,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:27:54,026 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 18:27:54,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:27:54,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:27:54,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:27:54,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:27:54,050 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:27:54,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:27:54,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:27:54,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:27:54,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:27:54,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:27:54,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:27:54,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:27:54,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:27:54,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:27:54,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:27:54,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:27:54,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:27:54,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:27:54,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:27:54,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:27:54,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:27:54,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:27:54,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:27:54,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:27:54,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:27:54,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:27:54,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:27:54,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:27:54,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:27:54,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:27:54,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:27:54,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:27:54,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:27:54,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:27:54,414 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:27:54,415 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-18 18:27:54,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5f06e431/eb2d3c1127654f73844ec5845a523569/FLAG0398f045b [2020-08-18 18:27:54,978 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:27:54,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-18 18:27:54,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5f06e431/eb2d3c1127654f73844ec5845a523569/FLAG0398f045b [2020-08-18 18:27:55,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5f06e431/eb2d3c1127654f73844ec5845a523569 [2020-08-18 18:27:55,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:27:55,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:27:55,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:55,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:27:55,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:27:55,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:55" (1/1) ... [2020-08-18 18:27:55,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e57099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:55, skipping insertion in model container [2020-08-18 18:27:55,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:55" (1/1) ... [2020-08-18 18:27:55,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:27:55,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:27:55,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:55,880 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:27:55,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:56,022 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:27:56,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56 WrapperNode [2020-08-18 18:27:56,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:56,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:27:56,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:27:56,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:27:56,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (1/1) ... [2020-08-18 18:27:56,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (1/1) ... [2020-08-18 18:27:56,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (1/1) ... [2020-08-18 18:27:56,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (1/1) ... [2020-08-18 18:27:56,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (1/1) ... [2020-08-18 18:27:56,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (1/1) ... [2020-08-18 18:27:56,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (1/1) ... [2020-08-18 18:27:56,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:27:56,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:27:56,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:27:56,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:27:56,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (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 18:27:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:27:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:27:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:27:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:27:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:27:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:27:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:27:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 18:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:27:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:27:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:27:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:27:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:27:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:27:56,186 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:27:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:27:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:27:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:27:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:27:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:27:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:27:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:27:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:27:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:27:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:27:56,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:27:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:27:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:27:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:27:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:27:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:27:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:27:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:27:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:27:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:27:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:27:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:27:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:27:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:27:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:27:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:27:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:27:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:27:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:27:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:27:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:27:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:27:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:27:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:27:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:27:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:27:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:27:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 18:27:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:27:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:27:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:27:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:27:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:27:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:27:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:27:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:27:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:27:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:27:57,328 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:27:57,328 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:27:57,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:57 BoogieIcfgContainer [2020-08-18 18:27:57,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:27:57,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:27:57,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:27:57,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:27:57,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:27:55" (1/3) ... [2020-08-18 18:27:57,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d49d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:57, skipping insertion in model container [2020-08-18 18:27:57,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:56" (2/3) ... [2020-08-18 18:27:57,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d49d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:57, skipping insertion in model container [2020-08-18 18:27:57,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:57" (3/3) ... [2020-08-18 18:27:57,342 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-08-18 18:27:57,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:27:57,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:27:57,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:27:57,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:27:57,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:27:57,398 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:27:57,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:27:57,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:27:57,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:27:57,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:27:57,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:27:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-18 18:27:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 18:27:57,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:57,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:57,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-08-18 18:27:57,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:57,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947378284] [2020-08-18 18:27:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,106 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:27:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,236 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 18:27:58,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947378284] [2020-08-18 18:27:58,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:58,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:27:58,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118179130] [2020-08-18 18:27:58,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:27:58,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:58,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:27:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:58,262 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-18 18:27:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:59,542 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-18 18:27:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:27:59,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 18:27:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:59,566 INFO L225 Difference]: With dead ends: 338 [2020-08-18 18:27:59,566 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 18:27:59,573 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 18:27:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 18:27:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-18 18:27:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 18:27:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-08-18 18:27:59,702 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-08-18 18:27:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:59,703 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-08-18 18:27:59,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:27:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-08-18 18:27:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:27:59,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:59,707 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 18:27:59,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:27:59,707 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:59,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-08-18 18:27:59,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:59,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874935927] [2020-08-18 18:27:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,031 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:28:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:28:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,073 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 18:28:00,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874935927] [2020-08-18 18:28:00,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:00,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:28:00,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489247711] [2020-08-18 18:28:00,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:28:00,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:00,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:28:00,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:28:00,077 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-08-18 18:28:00,484 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:01,470 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-18 18:28:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:28:01,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 18:28:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:01,474 INFO L225 Difference]: With dead ends: 267 [2020-08-18 18:28:01,474 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 18:28:01,476 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 18:28:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 18:28:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 18:28:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 18:28:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-18 18:28:01,516 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-08-18 18:28:01,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:01,517 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-18 18:28:01,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:28:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-18 18:28:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:28:01,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:01,519 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 18:28:01,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:28:01,520 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:01,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-08-18 18:28:01,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:01,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303894216] [2020-08-18 18:28:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,814 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:28:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:28:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:01,912 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 18:28:01,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303894216] [2020-08-18 18:28:01,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:01,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:28:01,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901972834] [2020-08-18 18:28:01,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:28:01,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:01,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:28:01,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:28:01,914 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-08-18 18:28:02,272 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:02,603 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:02,839 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:03,060 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:04,419 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-08-18 18:28:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:28:04,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 18:28:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:04,429 INFO L225 Difference]: With dead ends: 280 [2020-08-18 18:28:04,429 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 18:28:04,431 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 18:28:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 18:28:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 18:28:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 18:28:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-08-18 18:28:04,468 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-08-18 18:28:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:04,469 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-08-18 18:28:04,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:28:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-08-18 18:28:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 18:28:04,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:04,472 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 18:28:04,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:28:04,473 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:04,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-08-18 18:28:04,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:04,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034827742] [2020-08-18 18:28:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,739 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:04,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:28:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 18:28:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 18:28:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,874 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 18:28:04,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034827742] [2020-08-18 18:28:04,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:04,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:28:04,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472641623] [2020-08-18 18:28:04,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:28:04,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:04,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:28:04,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:28:04,879 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-08-18 18:28:05,210 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:06,394 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:07,207 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-08-18 18:28:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:28:07,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-18 18:28:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:07,214 INFO L225 Difference]: With dead ends: 383 [2020-08-18 18:28:07,215 INFO L226 Difference]: Without dead ends: 269 [2020-08-18 18:28:07,217 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 18:28:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-18 18:28:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-18 18:28:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-18 18:28:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-08-18 18:28:07,313 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-08-18 18:28:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:07,314 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-08-18 18:28:07,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:28:07,314 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-08-18 18:28:07,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:28:07,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:07,320 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 18:28:07,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:28:07,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:07,321 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-08-18 18:28:07,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:07,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93737224] [2020-08-18 18:28:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,681 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:28:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:28:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:28:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:07,831 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 18:28:07,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93737224] [2020-08-18 18:28:07,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:07,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:28:07,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664998320] [2020-08-18 18:28:07,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:28:07,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:28:07,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:28:07,834 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 10 states. [2020-08-18 18:28:08,338 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:08,594 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:08,832 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:09,478 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:09,757 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:10,032 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:11,170 INFO L93 Difference]: Finished difference Result 472 states and 571 transitions. [2020-08-18 18:28:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:28:11,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-18 18:28:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:11,174 INFO L225 Difference]: With dead ends: 472 [2020-08-18 18:28:11,175 INFO L226 Difference]: Without dead ends: 270 [2020-08-18 18:28:11,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:28:11,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-18 18:28:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 230. [2020-08-18 18:28:11,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-18 18:28:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2020-08-18 18:28:11,228 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 84 [2020-08-18 18:28:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:11,229 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2020-08-18 18:28:11,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:28:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2020-08-18 18:28:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:28:11,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:11,230 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 18:28:11,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:28:11,231 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:11,231 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-08-18 18:28:11,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:11,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277964311] [2020-08-18 18:28:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,590 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:28:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:28:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:28:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,711 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 18:28:11,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277964311] [2020-08-18 18:28:11,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:11,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:28:11,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620736706] [2020-08-18 18:28:11,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:28:11,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:11,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:28:11,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:28:11,713 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand 8 states. [2020-08-18 18:28:12,131 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:13,404 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:13,677 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:13,919 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:14,144 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:14,436 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:15,747 INFO L93 Difference]: Finished difference Result 688 states and 836 transitions. [2020-08-18 18:28:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:28:15,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 18:28:15,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:15,753 INFO L225 Difference]: With dead ends: 688 [2020-08-18 18:28:15,753 INFO L226 Difference]: Without dead ends: 482 [2020-08-18 18:28:15,754 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 18:28:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-18 18:28:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 415. [2020-08-18 18:28:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-18 18:28:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 470 transitions. [2020-08-18 18:28:15,845 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 470 transitions. Word has length 84 [2020-08-18 18:28:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:15,846 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 470 transitions. [2020-08-18 18:28:15,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:28:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 470 transitions. [2020-08-18 18:28:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:28:15,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:15,848 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 18:28:15,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:28:15,848 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:15,849 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-08-18 18:28:15,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:15,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6279779] [2020-08-18 18:28:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,137 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 18:28:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 18:28:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:16,253 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 18:28:16,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6279779] [2020-08-18 18:28:16,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:16,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:28:16,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010165894] [2020-08-18 18:28:16,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:28:16,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:16,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:28:16,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:28:16,256 INFO L87 Difference]: Start difference. First operand 415 states and 470 transitions. Second operand 9 states. [2020-08-18 18:28:16,731 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:17,796 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:18,012 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:18,273 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:18,536 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:18,773 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:19,703 INFO L93 Difference]: Finished difference Result 524 states and 650 transitions. [2020-08-18 18:28:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:28:19,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 18:28:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:19,707 INFO L225 Difference]: With dead ends: 524 [2020-08-18 18:28:19,708 INFO L226 Difference]: Without dead ends: 521 [2020-08-18 18:28:19,709 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 18:28:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-08-18 18:28:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 415. [2020-08-18 18:28:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-18 18:28:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 469 transitions. [2020-08-18 18:28:19,817 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 469 transitions. Word has length 88 [2020-08-18 18:28:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:19,818 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 469 transitions. [2020-08-18 18:28:19,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 469 transitions. [2020-08-18 18:28:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 18:28:19,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:19,822 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 18:28:19,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:28:19,823 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:19,823 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-08-18 18:28:19,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:19,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429411586] [2020-08-18 18:28:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,120 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:20,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 18:28:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 18:28:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:20,277 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 18:28:20,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429411586] [2020-08-18 18:28:20,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:20,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:28:20,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86022508] [2020-08-18 18:28:20,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:28:20,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:20,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:28:20,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:28:20,280 INFO L87 Difference]: Start difference. First operand 415 states and 469 transitions. Second operand 9 states. [2020-08-18 18:28:21,360 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:21,592 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:28:21,826 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:22,052 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:23,258 INFO L93 Difference]: Finished difference Result 916 states and 1112 transitions. [2020-08-18 18:28:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:28:23,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-18 18:28:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:23,264 INFO L225 Difference]: With dead ends: 916 [2020-08-18 18:28:23,264 INFO L226 Difference]: Without dead ends: 525 [2020-08-18 18:28:23,265 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 18:28:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-08-18 18:28:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-08-18 18:28:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-18 18:28:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-08-18 18:28:23,369 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-08-18 18:28:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:23,370 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-08-18 18:28:23,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-08-18 18:28:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 18:28:23,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:23,374 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 18:28:23,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:28:23,374 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-08-18 18:28:23,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:23,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370241170] [2020-08-18 18:28:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,631 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 18:28:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 18:28:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:23,782 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 18:28:23,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370241170] [2020-08-18 18:28:23,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:23,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:28:23,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410992706] [2020-08-18 18:28:23,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:28:23,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:23,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:28:23,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:28:23,785 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 7 states. [2020-08-18 18:28:24,241 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:24,749 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:27,187 INFO L93 Difference]: Finished difference Result 1286 states and 1638 transitions. [2020-08-18 18:28:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:28:27,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-08-18 18:28:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:27,194 INFO L225 Difference]: With dead ends: 1286 [2020-08-18 18:28:27,194 INFO L226 Difference]: Without dead ends: 885 [2020-08-18 18:28:27,196 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 18:28:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-18 18:28:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-08-18 18:28:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-18 18:28:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 897 transitions. [2020-08-18 18:28:27,331 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 897 transitions. Word has length 89 [2020-08-18 18:28:27,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:27,331 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 897 transitions. [2020-08-18 18:28:27,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:28:27,332 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 897 transitions. [2020-08-18 18:28:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 18:28:27,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:27,334 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 18:28:27,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:28:27,334 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-08-18 18:28:27,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:27,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897319492] [2020-08-18 18:28:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:28:27,397 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:28:27,397 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:28:27,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:28:27,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:28:27 BoogieIcfgContainer [2020-08-18 18:28:27,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:28:27,443 INFO L168 Benchmark]: Toolchain (without parser) took 32102.48 ms. Allocated memory was 147.3 MB in the beginning and 630.2 MB in the end (delta: 482.9 MB). Free memory was 102.5 MB in the beginning and 321.3 MB in the end (delta: -218.8 MB). Peak memory consumption was 264.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:27,444 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:28:27,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.24 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 170.5 MB in the end (delta: -68.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:27,451 INFO L168 Benchmark]: Boogie Preprocessor took 90.95 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:27,453 INFO L168 Benchmark]: RCFGBuilder took 1219.30 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 166.3 MB in the beginning and 193.5 MB in the end (delta: -27.2 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:27,456 INFO L168 Benchmark]: TraceAbstraction took 30103.62 ms. Allocated memory was 237.5 MB in the beginning and 630.2 MB in the end (delta: 392.7 MB). Free memory was 193.5 MB in the beginning and 321.3 MB in the end (delta: -127.9 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:27,463 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 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.24 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 170.5 MB in the end (delta: -68.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.95 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1219.30 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 166.3 MB in the beginning and 193.5 MB in the end (delta: -27.2 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30103.62 ms. Allocated memory was 237.5 MB in the beginning and 630.2 MB in the end (delta: 392.7 MB). Free memory was 193.5 MB in the beginning and 321.3 MB in the end (delta: -127.9 MB). Peak memory consumption was 264.8 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: 30.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1219 SDtfs, 2058 SDslu, 1104 SDs, 0 SdLazy, 5508 SolverSat, 1361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1s 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...