/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:08:52,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:08:52,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:08:52,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:08:52,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:08:52,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:08:52,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:08:52,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:08:52,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:08:52,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:08:52,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:08:52,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:08:52,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:08:52,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:08:52,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:08:52,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:08:52,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:08:52,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:08:52,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:08:52,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:08:52,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:08:52,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:08:52,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:08:52,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:08:52,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:08:52,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:08:52,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:08:52,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:08:52,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:08:52,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:08:52,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:08:52,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:08:52,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:08:52,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:08:52,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:08:52,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:08:52,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:08:52,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:08:52,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:08:52,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:08:52,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:08:52,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:08:52,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:08:52,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:08:52,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:08:52,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:08:52,678 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:08:52,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:08:52,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:08:52,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:08:52,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:08:52,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:08:52,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:08:52,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:08:52,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:08:52,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:08:52,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:08:52,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:08:52,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:08:52,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:08:52,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:08:52,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:08:52,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:08:52,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:08:52,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:08:52,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:08:52,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:08:52,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:08:52,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:08:52,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:08:52,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:08:52,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:08:52,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:08:52,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:08:52,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:08:52,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:08:52,990 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:08:52,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 04:08:53,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b1c72d3c/fd9033f6462d48f4b584ff03e2b376c1/FLAG017a18c45 [2020-08-19 04:08:53,591 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:08:53,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 04:08:53,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b1c72d3c/fd9033f6462d48f4b584ff03e2b376c1/FLAG017a18c45 [2020-08-19 04:08:53,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b1c72d3c/fd9033f6462d48f4b584ff03e2b376c1 [2020-08-19 04:08:53,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:08:53,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:08:53,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:08:53,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:08:53,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:08:53,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:08:53" (1/1) ... [2020-08-19 04:08:53,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:53, skipping insertion in model container [2020-08-19 04:08:53,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:08:53" (1/1) ... [2020-08-19 04:08:53,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:08:53,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:08:54,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:08:54,278 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:08:54,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:08:54,512 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:08:54,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54 WrapperNode [2020-08-19 04:08:54,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:08:54,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:08:54,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:08:54,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:08:54,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (1/1) ... [2020-08-19 04:08:54,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (1/1) ... [2020-08-19 04:08:54,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (1/1) ... [2020-08-19 04:08:54,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (1/1) ... [2020-08-19 04:08:54,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (1/1) ... [2020-08-19 04:08:54,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (1/1) ... [2020-08-19 04:08:54,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (1/1) ... [2020-08-19 04:08:54,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:08:54,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:08:54,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:08:54,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:08:54,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (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 [2020-08-19 04:08:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:08:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:08:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:08:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:08:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:08:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:08:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:08:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:08:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:08:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:08:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:08:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:08:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:08:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:08:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:08:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:08:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:08:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:08:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:08:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:08:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:08:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:08:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:08:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:08:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:08:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:08:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:08:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:08:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:08:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:08:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:08:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:08:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:08:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:08:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:08:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:08:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:08:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:08:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:08:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:08:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:08:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:08:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:08:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:08:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:08:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:08:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:08:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:08:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:08:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:08:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:08:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:08:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:08:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:08:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:08:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:08:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:08:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:08:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:08:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:08:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:08:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:08:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:08:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:08:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:08:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:08:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:08:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:08:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:08:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:08:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:08:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:08:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:08:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:08:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:08:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:08:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:08:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:08:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:08:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:08:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:08:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:08:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:08:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:08:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:08:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:08:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:08:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:08:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:08:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:08:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:08:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:08:55,830 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:08:55,830 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:08:55,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:08:55 BoogieIcfgContainer [2020-08-19 04:08:55,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:08:55,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:08:55,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:08:55,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:08:55,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:08:53" (1/3) ... [2020-08-19 04:08:55,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7717a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:08:55, skipping insertion in model container [2020-08-19 04:08:55,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:08:54" (2/3) ... [2020-08-19 04:08:55,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7717a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:08:55, skipping insertion in model container [2020-08-19 04:08:55,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:08:55" (3/3) ... [2020-08-19 04:08:55,851 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-08-19 04:08:55,860 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:08:55,869 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:08:55,883 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:08:55,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:08:55,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:08:55,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:08:55,909 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:08:55,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:08:55,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:08:55,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:08:55,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:08:55,931 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-19 04:08:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:08:55,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:08:55,943 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] [2020-08-19 04:08:55,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:08:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:08:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-08-19 04:08:55,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:08:55,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225919316] [2020-08-19 04:08:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:08:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,618 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:08:56,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:08:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:08:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:08:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:08:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:08:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:08:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:08:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:08:56,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225919316] [2020-08-19 04:08:56,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:08:56,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:08:56,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506922062] [2020-08-19 04:08:56,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:08:56,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:08:56,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:08:56,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:08:56,798 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-19 04:08:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:08:58,055 INFO L93 Difference]: Finished difference Result 301 states and 397 transitions. [2020-08-19 04:08:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:08:58,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:08:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:08:58,085 INFO L225 Difference]: With dead ends: 301 [2020-08-19 04:08:58,086 INFO L226 Difference]: Without dead ends: 163 [2020-08-19 04:08:58,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:08:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-19 04:08:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-19 04:08:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 04:08:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-08-19 04:08:58,252 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-08-19 04:08:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:08:58,254 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-08-19 04:08:58,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:08:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-08-19 04:08:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:08:58,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:08:58,267 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] [2020-08-19 04:08:58,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:08:58,268 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:08:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:08:58,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-08-19 04:08:58,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:08:58,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066157396] [2020-08-19 04:08:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:08:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,728 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:08:58,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:08:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:08:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:08:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:08:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:08:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:08:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:08:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:08:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:08:58,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066157396] [2020-08-19 04:08:58,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:08:58,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:08:58,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390131935] [2020-08-19 04:08:58,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:08:58,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:08:58,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:08:58,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:08:58,778 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 4 states. [2020-08-19 04:08:59,190 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:00,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:00,045 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-08-19 04:09:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:09:00,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:09:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:00,051 INFO L225 Difference]: With dead ends: 228 [2020-08-19 04:09:00,051 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 04:09:00,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:09:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 04:09:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-19 04:09:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 04:09:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-08-19 04:09:00,113 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-08-19 04:09:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:00,114 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-08-19 04:09:00,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:09:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-08-19 04:09:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:09:00,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:00,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:00,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:09:00,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-08-19 04:09:00,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:00,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918397538] [2020-08-19 04:09:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,529 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:09:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:09:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:00,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918397538] [2020-08-19 04:09:00,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:00,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:09:00,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066085894] [2020-08-19 04:09:00,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:09:00,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:00,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:09:00,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:09:00,636 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 8 states. [2020-08-19 04:09:01,048 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:01,363 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:01,656 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:01,900 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:02,637 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:04,380 INFO L93 Difference]: Finished difference Result 412 states and 515 transitions. [2020-08-19 04:09:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:09:04,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 04:09:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:04,385 INFO L225 Difference]: With dead ends: 412 [2020-08-19 04:09:04,385 INFO L226 Difference]: Without dead ends: 316 [2020-08-19 04:09:04,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:09:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-19 04:09:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2020-08-19 04:09:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-19 04:09:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 314 transitions. [2020-08-19 04:09:04,457 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 314 transitions. Word has length 51 [2020-08-19 04:09:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:04,458 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 314 transitions. [2020-08-19 04:09:04,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:09:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 314 transitions. [2020-08-19 04:09:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:09:04,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:04,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:04,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:09:04,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:04,461 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-08-19 04:09:04,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:04,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101483540] [2020-08-19 04:09:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,744 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:09:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:09:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:09:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:04,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101483540] [2020-08-19 04:09:04,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:04,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:09:04,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944337635] [2020-08-19 04:09:04,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:09:04,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:09:04,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:09:04,866 INFO L87 Difference]: Start difference. First operand 258 states and 314 transitions. Second operand 8 states. [2020-08-19 04:09:05,300 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:06,184 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:06,605 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:06,910 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:07,218 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:07,632 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:08,543 INFO L93 Difference]: Finished difference Result 832 states and 1087 transitions. [2020-08-19 04:09:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:09:08,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 04:09:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:08,550 INFO L225 Difference]: With dead ends: 832 [2020-08-19 04:09:08,550 INFO L226 Difference]: Without dead ends: 598 [2020-08-19 04:09:08,552 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 [2020-08-19 04:09:08,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-19 04:09:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 471. [2020-08-19 04:09:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-19 04:09:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 578 transitions. [2020-08-19 04:09:08,676 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 578 transitions. Word has length 57 [2020-08-19 04:09:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:08,676 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 578 transitions. [2020-08-19 04:09:08,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:09:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 578 transitions. [2020-08-19 04:09:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 04:09:08,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:08,679 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] [2020-08-19 04:09:08,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:09:08,680 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:08,680 INFO L82 PathProgramCache]: Analyzing trace with hash -690329863, now seen corresponding path program 1 times [2020-08-19 04:09:08,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:08,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518330623] [2020-08-19 04:09:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:08,943 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:08,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:09:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:09:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 04:09:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:09,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518330623] [2020-08-19 04:09:09,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:09,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:09:09,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128903128] [2020-08-19 04:09:09,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:09:09,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:09,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:09:09,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:09:09,048 INFO L87 Difference]: Start difference. First operand 471 states and 578 transitions. Second operand 9 states. [2020-08-19 04:09:09,507 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:10,415 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:10,690 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:10,953 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:11,509 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:11,787 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:12,804 INFO L93 Difference]: Finished difference Result 1331 states and 1800 transitions. [2020-08-19 04:09:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:09:12,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 04:09:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:12,813 INFO L225 Difference]: With dead ends: 1331 [2020-08-19 04:09:12,813 INFO L226 Difference]: Without dead ends: 884 [2020-08-19 04:09:12,816 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 [2020-08-19 04:09:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-08-19 04:09:12,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 703. [2020-08-19 04:09:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 04:09:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 871 transitions. [2020-08-19 04:09:12,985 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 871 transitions. Word has length 61 [2020-08-19 04:09:12,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:12,985 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 871 transitions. [2020-08-19 04:09:12,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:09:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 871 transitions. [2020-08-19 04:09:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:09:12,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:12,988 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] [2020-08-19 04:09:12,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:09:12,989 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1573489665, now seen corresponding path program 1 times [2020-08-19 04:09:12,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:12,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64527052] [2020-08-19 04:09:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,274 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:09:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:13,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64527052] [2020-08-19 04:09:13,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:13,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:09:13,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263633481] [2020-08-19 04:09:13,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:09:13,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:13,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:09:13,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:09:13,426 INFO L87 Difference]: Start difference. First operand 703 states and 871 transitions. Second operand 9 states. [2020-08-19 04:09:14,003 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:14,902 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:15,136 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:09:15,402 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:15,642 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:17,575 INFO L93 Difference]: Finished difference Result 2338 states and 3323 transitions. [2020-08-19 04:09:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:09:17,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 04:09:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:17,590 INFO L225 Difference]: With dead ends: 2338 [2020-08-19 04:09:17,590 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 04:09:17,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:09:17,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 04:09:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1259. [2020-08-19 04:09:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-08-19 04:09:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1546 transitions. [2020-08-19 04:09:17,884 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1546 transitions. Word has length 83 [2020-08-19 04:09:17,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:17,885 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1546 transitions. [2020-08-19 04:09:17,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:09:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1546 transitions. [2020-08-19 04:09:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:09:17,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:17,890 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] [2020-08-19 04:09:17,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:09:17,890 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-08-19 04:09:17,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:17,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806326481] [2020-08-19 04:09:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,142 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:09:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:18,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806326481] [2020-08-19 04:09:18,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:18,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:09:18,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349665486] [2020-08-19 04:09:18,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:09:18,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:09:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:09:18,261 INFO L87 Difference]: Start difference. First operand 1259 states and 1546 transitions. Second operand 9 states. [2020-08-19 04:09:19,301 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:19,535 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:09:19,906 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:20,198 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:21,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:21,276 INFO L93 Difference]: Finished difference Result 2894 states and 3849 transitions. [2020-08-19 04:09:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:09:21,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 04:09:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:21,295 INFO L225 Difference]: With dead ends: 2894 [2020-08-19 04:09:21,296 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 04:09:21,302 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 [2020-08-19 04:09:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 04:09:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1299. [2020-08-19 04:09:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-19 04:09:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1586 transitions. [2020-08-19 04:09:21,688 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1586 transitions. Word has length 83 [2020-08-19 04:09:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:21,689 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1586 transitions. [2020-08-19 04:09:21,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:09:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1586 transitions. [2020-08-19 04:09:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:09:21,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:21,692 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] [2020-08-19 04:09:21,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:09:21,693 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:21,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:21,693 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-08-19 04:09:21,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:21,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406382169] [2020-08-19 04:09:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:21,975 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:21,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:09:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:22,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406382169] [2020-08-19 04:09:22,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:22,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:09:22,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226791095] [2020-08-19 04:09:22,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:09:22,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:22,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:09:22,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:09:22,123 INFO L87 Difference]: Start difference. First operand 1299 states and 1586 transitions. Second operand 11 states. [2020-08-19 04:09:23,439 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:23,666 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:23,883 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:24,585 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:24,855 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:25,100 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:26,293 INFO L93 Difference]: Finished difference Result 2592 states and 3413 transitions. [2020-08-19 04:09:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:09:26,294 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-19 04:09:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:26,303 INFO L225 Difference]: With dead ends: 2592 [2020-08-19 04:09:26,303 INFO L226 Difference]: Without dead ends: 1317 [2020-08-19 04:09:26,308 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 [2020-08-19 04:09:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-19 04:09:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1073. [2020-08-19 04:09:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-08-19 04:09:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1282 transitions. [2020-08-19 04:09:26,542 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1282 transitions. Word has length 83 [2020-08-19 04:09:26,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:26,543 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1282 transitions. [2020-08-19 04:09:26,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:09:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1282 transitions. [2020-08-19 04:09:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 04:09:26,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:26,547 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] [2020-08-19 04:09:26,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:09:26,547 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:26,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-08-19 04:09:26,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:26,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320744260] [2020-08-19 04:09:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:09:26,632 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:09:26,633 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:09:26,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:09:26,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:09:26 BoogieIcfgContainer [2020-08-19 04:09:26,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:09:26,680 INFO L168 Benchmark]: Toolchain (without parser) took 32785.79 ms. Allocated memory was 139.5 MB in the beginning and 685.2 MB in the end (delta: 545.8 MB). Free memory was 100.8 MB in the beginning and 547.1 MB in the end (delta: -446.2 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:26,683 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:09:26,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.75 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 172.0 MB in the end (delta: -71.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:26,692 INFO L168 Benchmark]: Boogie Preprocessor took 87.63 ms. Allocated memory is still 202.4 MB. Free memory was 172.0 MB in the beginning and 167.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:26,693 INFO L168 Benchmark]: RCFGBuilder took 1238.47 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 167.6 MB in the beginning and 197.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:26,693 INFO L168 Benchmark]: TraceAbstraction took 30836.24 ms. Allocated memory was 235.9 MB in the beginning and 685.2 MB in the end (delta: 449.3 MB). Free memory was 197.9 MB in the beginning and 547.1 MB in the end (delta: -349.1 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:26,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.75 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.4 MB in the beginning and 172.0 MB in the end (delta: -71.6 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.63 ms. Allocated memory is still 202.4 MB. Free memory was 172.0 MB in the beginning and 167.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1238.47 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 167.6 MB in the beginning and 197.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30836.24 ms. Allocated memory was 235.9 MB in the beginning and 685.2 MB in the end (delta: 449.3 MB). Free memory was 197.9 MB in the beginning and 547.1 MB in the end (delta: -349.1 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 25.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 911 SDtfs, 1603 SDslu, 1192 SDs, 0 SdLazy, 5330 SolverSat, 1013 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred 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: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1431 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 147464 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...