/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:04:51,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:04:51,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:04:52,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:04:52,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:04:52,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:04:52,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:04:52,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:04:52,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:04:52,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:04:52,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:04:52,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:04:52,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:04:52,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:04:52,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:04:52,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:04:52,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:04:52,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:04:52,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:04:52,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:04:52,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:04:52,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:04:52,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:04:52,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:04:52,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:04:52,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:04:52,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:04:52,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:04:52,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:04:52,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:04:52,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:04:52,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:04:52,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:04:52,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:04:52,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:04:52,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:04:52,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:04:52,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:04:52,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:04:52,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:04:52,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:04:52,081 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 [2020-08-21 13:04:52,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:04:52,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:04:52,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:04:52,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:04:52,117 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:04:52,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:04:52,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:04:52,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:04:52,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:04:52,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:04:52,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:04:52,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:04:52,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:04:52,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:04:52,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:04:52,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:04:52,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:04:52,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:04:52,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:04:52,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:04:52,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:04:52,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:04:52,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:04:52,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:04:52,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:04:52,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:04:52,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:04:52,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:04:52,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:04:52,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:04:52,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:04:52,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:04:52,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:04:52,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:04:52,417 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:04:52,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-21 13:04:52,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4563c37c/b5539f88577e404a8ad458ddd99c5f70/FLAG7bebf87a9 [2020-08-21 13:04:53,042 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:04:53,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-21 13:04:53,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4563c37c/b5539f88577e404a8ad458ddd99c5f70/FLAG7bebf87a9 [2020-08-21 13:04:53,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4563c37c/b5539f88577e404a8ad458ddd99c5f70 [2020-08-21 13:04:53,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:04:53,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:04:53,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:04:53,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:04:53,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:04:53,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:04:53" (1/1) ... [2020-08-21 13:04:53,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:53, skipping insertion in model container [2020-08-21 13:04:53,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:04:53" (1/1) ... [2020-08-21 13:04:53,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:04:53,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:04:53,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:04:53,887 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:04:53,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:04:54,029 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:04:54,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54 WrapperNode [2020-08-21 13:04:54,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:04:54,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:04:54,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:04:54,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:04:54,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (1/1) ... [2020-08-21 13:04:54,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (1/1) ... [2020-08-21 13:04:54,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (1/1) ... [2020-08-21 13:04:54,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (1/1) ... [2020-08-21 13:04:54,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (1/1) ... [2020-08-21 13:04:54,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (1/1) ... [2020-08-21 13:04:54,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (1/1) ... [2020-08-21 13:04:54,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:04:54,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:04:54,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:04:54,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:04:54,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (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 [2020-08-21 13:04:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:04:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:04:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:04:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:04:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:04:54,189 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:04:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:04:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:04:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:04:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:04:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:04:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:04:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:04:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 13:04:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:04:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:04:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:04:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:04:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:04:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:04:54,194 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:04:54,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:04:54,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:04:54,195 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:04:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:04:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:04:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:04:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:04:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:04:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:04:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:04:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:04:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:04:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:04:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:04:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:04:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:04:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:04:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:04:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:04:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:04:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 13:04:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:04:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:04:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:04:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:04:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:04:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:04:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:04:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:04:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:04:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:04:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:04:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:04:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:04:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:04:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:04:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:04:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:04:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:04:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:04:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:04:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:04:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:04:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:04:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:04:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:04:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:04:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:04:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:04:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:04:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:04:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:04:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:04:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:04:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:04:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:04:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:04:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:04:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:04:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:04:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:04:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:04:55,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:04:55,289 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:04:55,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:04:55 BoogieIcfgContainer [2020-08-21 13:04:55,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:04:55,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:04:55,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:04:55,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:04:55,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:04:53" (1/3) ... [2020-08-21 13:04:55,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136dba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:04:55, skipping insertion in model container [2020-08-21 13:04:55,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:54" (2/3) ... [2020-08-21 13:04:55,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136dba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:04:55, skipping insertion in model container [2020-08-21 13:04:55,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:04:55" (3/3) ... [2020-08-21 13:04:55,308 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-08-21 13:04:55,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:04:55,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:04:55,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:04:55,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:04:55,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:04:55,359 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:04:55,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:04:55,359 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:04:55,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:04:55,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:04:55,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:04:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-21 13:04:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:04:55,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:55,394 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] [2020-08-21 13:04:55,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash -963613915, now seen corresponding path program 1 times [2020-08-21 13:04:55,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:55,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572393759] [2020-08-21 13:04:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,038 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:04:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:04:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:56,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572393759] [2020-08-21 13:04:56,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:56,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:04:56,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108475352] [2020-08-21 13:04:56,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:04:56,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:56,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:04:56,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:04:56,187 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-21 13:04:57,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:04:57,417 INFO L93 Difference]: Finished difference Result 310 states and 407 transitions. [2020-08-21 13:04:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:04:57,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:04:57,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:04:57,434 INFO L225 Difference]: With dead ends: 310 [2020-08-21 13:04:57,435 INFO L226 Difference]: Without dead ends: 168 [2020-08-21 13:04:57,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:04:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-21 13:04:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-21 13:04:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 13:04:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-08-21 13:04:57,532 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 46 [2020-08-21 13:04:57,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:04:57,532 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-08-21 13:04:57,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:04:57,533 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-08-21 13:04:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:04:57,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:57,537 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] [2020-08-21 13:04:57,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:04:57,537 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1539591980, now seen corresponding path program 1 times [2020-08-21 13:04:57,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:57,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064528600] [2020-08-21 13:04:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,902 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:57,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:04:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:04:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:57,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064528600] [2020-08-21 13:04:57,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:57,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:04:57,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281027032] [2020-08-21 13:04:57,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:04:57,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:57,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:04:57,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:04:57,946 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 4 states. [2020-08-21 13:04:58,337 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:04:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:04:59,208 INFO L93 Difference]: Finished difference Result 233 states and 286 transitions. [2020-08-21 13:04:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:04:59,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:04:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:04:59,213 INFO L225 Difference]: With dead ends: 233 [2020-08-21 13:04:59,213 INFO L226 Difference]: Without dead ends: 152 [2020-08-21 13:04:59,217 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 [2020-08-21 13:04:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-21 13:04:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-21 13:04:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 13:04:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-21 13:04:59,260 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 47 [2020-08-21 13:04:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:04:59,261 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-21 13:04:59,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:04:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-21 13:04:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:04:59,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:59,263 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] [2020-08-21 13:04:59,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:04:59,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:59,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1079098286, now seen corresponding path program 1 times [2020-08-21 13:04:59,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:59,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127165057] [2020-08-21 13:04:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,653 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:04:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:04:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:59,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127165057] [2020-08-21 13:04:59,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:59,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:04:59,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791605840] [2020-08-21 13:04:59,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:04:59,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:59,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:04:59,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:04:59,772 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 8 states. [2020-08-21 13:05:00,146 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:00,464 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:00,716 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:00,934 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:01,709 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:03,537 INFO L93 Difference]: Finished difference Result 427 states and 532 transitions. [2020-08-21 13:05:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:05:03,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 13:05:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:03,551 INFO L225 Difference]: With dead ends: 427 [2020-08-21 13:05:03,551 INFO L226 Difference]: Without dead ends: 327 [2020-08-21 13:05:03,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:05:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-21 13:05:03,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 262. [2020-08-21 13:05:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-21 13:05:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 318 transitions. [2020-08-21 13:05:03,643 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 318 transitions. Word has length 52 [2020-08-21 13:05:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:03,644 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 318 transitions. [2020-08-21 13:05:03,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:05:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 318 transitions. [2020-08-21 13:05:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 13:05:03,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:03,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:03,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:05:03,647 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:03,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:03,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1051584563, now seen corresponding path program 1 times [2020-08-21 13:05:03,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:03,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165775008] [2020-08-21 13:05:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,982 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:05:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:05:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 13:05:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:04,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165775008] [2020-08-21 13:05:04,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:04,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:05:04,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546055128] [2020-08-21 13:05:04,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:05:04,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:04,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:05:04,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:05:04,055 INFO L87 Difference]: Start difference. First operand 262 states and 318 transitions. Second operand 8 states. [2020-08-21 13:05:04,413 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:05,355 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:05,755 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:05,993 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:06,265 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:06,734 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:07,560 INFO L93 Difference]: Finished difference Result 847 states and 1105 transitions. [2020-08-21 13:05:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:05:07,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 13:05:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:07,567 INFO L225 Difference]: With dead ends: 847 [2020-08-21 13:05:07,567 INFO L226 Difference]: Without dead ends: 609 [2020-08-21 13:05:07,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:05:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-08-21 13:05:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 479. [2020-08-21 13:05:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-08-21 13:05:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 586 transitions. [2020-08-21 13:05:07,694 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 586 transitions. Word has length 57 [2020-08-21 13:05:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:07,695 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 586 transitions. [2020-08-21 13:05:07,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:05:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 586 transitions. [2020-08-21 13:05:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 13:05:07,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:07,699 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] [2020-08-21 13:05:07,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:05:07,700 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:07,700 INFO L82 PathProgramCache]: Analyzing trace with hash -450930313, now seen corresponding path program 1 times [2020-08-21 13:05:07,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:07,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792737784] [2020-08-21 13:05:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,004 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:08,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:05:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:05:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:05:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:08,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792737784] [2020-08-21 13:05:08,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:08,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:05:08,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450322544] [2020-08-21 13:05:08,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:05:08,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:08,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:05:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:05:08,127 INFO L87 Difference]: Start difference. First operand 479 states and 586 transitions. Second operand 9 states. [2020-08-21 13:05:08,515 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:09,419 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:09,675 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:09,935 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:10,477 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:10,751 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:11,823 INFO L93 Difference]: Finished difference Result 1361 states and 1836 transitions. [2020-08-21 13:05:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:05:11,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-21 13:05:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:11,831 INFO L225 Difference]: With dead ends: 1361 [2020-08-21 13:05:11,831 INFO L226 Difference]: Without dead ends: 906 [2020-08-21 13:05:11,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:05:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-21 13:05:11,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 719. [2020-08-21 13:05:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-08-21 13:05:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 887 transitions. [2020-08-21 13:05:11,980 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 887 transitions. Word has length 61 [2020-08-21 13:05:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:11,980 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 887 transitions. [2020-08-21 13:05:11,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:05:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 887 transitions. [2020-08-21 13:05:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:05:11,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:11,983 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] [2020-08-21 13:05:11,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:05:11,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:11,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1506642599, now seen corresponding path program 1 times [2020-08-21 13:05:11,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:11,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858499061] [2020-08-21 13:05:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,239 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:12,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:05:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:05:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:05:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:12,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858499061] [2020-08-21 13:05:12,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:12,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:05:12,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008280925] [2020-08-21 13:05:12,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:05:12,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:12,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:05:12,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:05:12,377 INFO L87 Difference]: Start difference. First operand 719 states and 887 transitions. Second operand 9 states. [2020-08-21 13:05:12,787 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:13,788 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:14,031 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:05:14,277 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:14,540 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:16,404 INFO L93 Difference]: Finished difference Result 2409 states and 3416 transitions. [2020-08-21 13:05:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:05:16,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 13:05:16,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:16,418 INFO L225 Difference]: With dead ends: 2409 [2020-08-21 13:05:16,418 INFO L226 Difference]: Without dead ends: 1714 [2020-08-21 13:05:16,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:05:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-21 13:05:16,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1291. [2020-08-21 13:05:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-08-21 13:05:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1578 transitions. [2020-08-21 13:05:16,847 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1578 transitions. Word has length 84 [2020-08-21 13:05:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:16,847 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1578 transitions. [2020-08-21 13:05:16,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:05:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1578 transitions. [2020-08-21 13:05:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:05:16,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:16,852 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] [2020-08-21 13:05:16,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:05:16,852 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1762832698, now seen corresponding path program 1 times [2020-08-21 13:05:16,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:16,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965491776] [2020-08-21 13:05:16,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,156 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:17,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:05:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:05:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:05:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:17,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965491776] [2020-08-21 13:05:17,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:17,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:05:17,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690327362] [2020-08-21 13:05:17,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:05:17,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:17,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:05:17,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:05:17,281 INFO L87 Difference]: Start difference. First operand 1291 states and 1578 transitions. Second operand 9 states. [2020-08-21 13:05:18,349 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:18,604 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:05:18,916 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:19,160 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:20,216 INFO L93 Difference]: Finished difference Result 2981 states and 3956 transitions. [2020-08-21 13:05:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:05:20,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 13:05:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:20,228 INFO L225 Difference]: With dead ends: 2981 [2020-08-21 13:05:20,229 INFO L226 Difference]: Without dead ends: 1714 [2020-08-21 13:05:20,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:05:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-21 13:05:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1331. [2020-08-21 13:05:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-08-21 13:05:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1618 transitions. [2020-08-21 13:05:20,525 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1618 transitions. Word has length 84 [2020-08-21 13:05:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:20,527 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1618 transitions. [2020-08-21 13:05:20,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:05:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1618 transitions. [2020-08-21 13:05:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:05:20,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:20,530 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] [2020-08-21 13:05:20,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:05:20,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:20,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1785464952, now seen corresponding path program 1 times [2020-08-21 13:05:20,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:20,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71579237] [2020-08-21 13:05:20,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,805 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:05:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:05:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:05:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:20,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71579237] [2020-08-21 13:05:20,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:20,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:05:20,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123006026] [2020-08-21 13:05:20,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:05:20,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:20,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:05:20,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:05:20,930 INFO L87 Difference]: Start difference. First operand 1331 states and 1618 transitions. Second operand 11 states. [2020-08-21 13:05:21,537 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:21,756 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:21,972 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:22,717 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:23,016 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:23,268 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:24,435 INFO L93 Difference]: Finished difference Result 2667 states and 3504 transitions. [2020-08-21 13:05:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:05:24,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-21 13:05:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:24,445 INFO L225 Difference]: With dead ends: 2667 [2020-08-21 13:05:24,445 INFO L226 Difference]: Without dead ends: 1360 [2020-08-21 13:05:24,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:05:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-08-21 13:05:24,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1097. [2020-08-21 13:05:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2020-08-21 13:05:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1306 transitions. [2020-08-21 13:05:24,801 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1306 transitions. Word has length 84 [2020-08-21 13:05:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:24,801 INFO L479 AbstractCegarLoop]: Abstraction has 1097 states and 1306 transitions. [2020-08-21 13:05:24,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:05:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1306 transitions. [2020-08-21 13:05:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:05:24,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:24,806 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] [2020-08-21 13:05:24,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:05:24,807 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:24,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1546032113, now seen corresponding path program 1 times [2020-08-21 13:05:24,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:24,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4322223] [2020-08-21 13:05:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:05:24,884 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:05:24,885 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:05:24,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:05:24,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:05:24 BoogieIcfgContainer [2020-08-21 13:05:24,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:05:24,943 INFO L168 Benchmark]: Toolchain (without parser) took 31583.66 ms. Allocated memory was 140.0 MB in the beginning and 723.5 MB in the end (delta: 583.5 MB). Free memory was 102.1 MB in the beginning and 641.9 MB in the end (delta: -539.8 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:24,944 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:05:24,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.24 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 168.4 MB in the end (delta: -66.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:24,948 INFO L168 Benchmark]: Boogie Preprocessor took 100.87 ms. Allocated memory is still 202.9 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:24,952 INFO L168 Benchmark]: RCFGBuilder took 1168.08 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 164.4 MB in the beginning and 192.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:24,952 INFO L168 Benchmark]: TraceAbstraction took 29640.42 ms. Allocated memory was 235.4 MB in the beginning and 723.5 MB in the end (delta: 488.1 MB). Free memory was 192.0 MB in the beginning and 641.9 MB in the end (delta: -449.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:24,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.24 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 168.4 MB in the end (delta: -66.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.87 ms. Allocated memory is still 202.9 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1168.08 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 164.4 MB in the beginning and 192.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29640.42 ms. Allocated memory was 235.4 MB in the beginning and 723.5 MB in the end (delta: 488.1 MB). Free memory was 192.0 MB in the beginning and 641.9 MB in the end (delta: -449.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 490]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int pumpRunning = 0; [L52] int systemActive = 1; [L352] int cleanupTimeShifts = 4; [L664] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L428] int retValue_acc ; [L429] int tmp ; [L433] FCALL select_helpers() [L434] FCALL select_features() [L435] CALL, EXPR valid_product() [L477] int retValue_acc ; [L480] retValue_acc = 1 [L481] return (retValue_acc); [L435] RET, EXPR valid_product() [L435] tmp = valid_product() [L437] COND TRUE \read(tmp) [L439] FCALL setup() [L440] CALL runTest() [L419] CALL test() [L257] int splverifierCounter ; [L258] int tmp ; [L259] int tmp___0 ; [L260] int tmp___1 ; [L261] int tmp___2 ; [L264] splverifierCounter = 0 [L266] COND TRUE 1 [L268] COND TRUE splverifierCounter < 4 [L274] tmp = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp) [L278] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L278] RET waterRise() [L284] tmp___0 = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp___0) [L288] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L288] RET changeMethaneLevel() [L294] tmp___2 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp___2)) [L302] tmp___1 = __VERIFIER_nondet_int() [L304] COND FALSE !(\read(tmp___1)) [L313] CALL timeShift() [L59] COND FALSE !(\read(pumpRunning)) [L66] COND TRUE \read(systemActive) [L68] CALL processEnvironment() [L114] int tmp ; [L117] COND FALSE !(\read(pumpRunning)) [L132] CALL processEnvironment__wrappee__highWaterSensor() [L88] int tmp ; [L91] COND TRUE ! pumpRunning [L93] CALL, EXPR isHighWaterLevel() [L211] int retValue_acc ; [L212] int tmp ; [L213] int tmp___0 ; [L217] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L217] RET, EXPR isHighWaterSensorDry() [L217] tmp = isHighWaterSensorDry() [L219] COND FALSE !(\read(tmp)) [L222] tmp___0 = 1 [L224] retValue_acc = tmp___0 [L225] return (retValue_acc); [L93] RET, EXPR isHighWaterLevel() [L93] tmp = isHighWaterLevel() [L95] COND TRUE \read(tmp) [L97] CALL activatePump() [L142] pumpRunning = 1 [L97] RET activatePump() [L132] RET processEnvironment__wrappee__highWaterSensor() [L68] RET processEnvironment() [L74] CALL __utac_acc__Specification1_spec__1() [L327] int tmp ; [L328] int tmp___0 ; [L332] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L332] RET, EXPR isMethaneLevelCritical() [L332] tmp = isMethaneLevelCritical() [L334] COND TRUE \read(tmp) [L336] CALL, EXPR isPumpRunning() [L166] int retValue_acc ; [L169] retValue_acc = pumpRunning [L170] return (retValue_acc); [L336] RET, EXPR isPumpRunning() [L336] tmp___0 = isPumpRunning() [L338] COND TRUE \read(tmp___0) [L340] CALL __automaton_fail() [L490] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 945 SDtfs, 1824 SDslu, 1208 SDs, 0 SdLazy, 5496 SolverSat, 1257 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1331occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 1514 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 150284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...