/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:31:59,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:31:59,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:31:59,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:31:59,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:31:59,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:31:59,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:31:59,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:31:59,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:31:59,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:31:59,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:31:59,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:31:59,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:31:59,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:31:59,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:31:59,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:31:59,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:31:59,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:31:59,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:31:59,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:31:59,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:31:59,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:31:59,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:31:59,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:31:59,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 12:31:59,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 12:31:59,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 12:31:59,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 12:31:59,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 12:31:59,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 12:31:59,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 12:31:59,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 12:31:59,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 12:31:59,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 12:31:59,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 12:31:59,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 12:31:59,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 12:31:59,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 12:31:59,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:31:59,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:31:59,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:31:59,412 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 [2020-09-04 12:31:59,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:31:59,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:31:59,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:31:59,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:31:59,439 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:31:59,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:31:59,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:31:59,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:31:59,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:31:59,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:31:59,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:31:59,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:31:59,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:31:59,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:31:59,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:31:59,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:31:59,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:31:59,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:31:59,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:31:59,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:31:59,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:31:59,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:31:59,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:31:59,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:31:59,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:31:59,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:31:59,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:31:59,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:31:59,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:31:59,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:31:59,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:31:59,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:31:59,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:31:59,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:31:59,915 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:31:59,916 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-09-04 12:32:00,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc300678f/d1fa9587ffcc4f55ab58abd4aceb3637/FLAG4c58493a2 [2020-09-04 12:32:00,649 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:32:00,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-09-04 12:32:00,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc300678f/d1fa9587ffcc4f55ab58abd4aceb3637/FLAG4c58493a2 [2020-09-04 12:32:00,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc300678f/d1fa9587ffcc4f55ab58abd4aceb3637 [2020-09-04 12:32:00,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:32:00,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:32:00,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:32:00,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:32:00,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:32:00,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:32:00" (1/1) ... [2020-09-04 12:32:00,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:00, skipping insertion in model container [2020-09-04 12:32:00,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:32:00" (1/1) ... [2020-09-04 12:32:00,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:32:00,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:32:01,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:32:01,408 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:32:01,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:32:01,561 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:32:01,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01 WrapperNode [2020-09-04 12:32:01,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:32:01,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:32:01,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:32:01,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:32:01,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (1/1) ... [2020-09-04 12:32:01,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (1/1) ... [2020-09-04 12:32:01,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (1/1) ... [2020-09-04 12:32:01,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (1/1) ... [2020-09-04 12:32:01,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (1/1) ... [2020-09-04 12:32:01,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (1/1) ... [2020-09-04 12:32:01,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (1/1) ... [2020-09-04 12:32:01,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:32:01,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:32:01,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:32:01,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:32:01,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (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 [2020-09-04 12:32:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:32:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:32:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 12:32:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 12:32:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 12:32:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 12:32:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 12:32:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 12:32:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 12:32:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 12:32:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 12:32:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 12:32:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 12:32:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 12:32:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 12:32:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 12:32:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 12:32:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 12:32:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:32:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 12:32:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 12:32:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 12:32:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 12:32:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 12:32:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 12:32:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 12:32:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 12:32:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 12:32:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 12:32:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 12:32:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 12:32:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 12:32:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 12:32:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 12:32:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 12:32:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 12:32:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-04 12:32:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-04 12:32:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:32:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 12:32:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 12:32:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 12:32:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 12:32:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 12:32:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 12:32:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 12:32:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 12:32:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 12:32:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 12:32:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 12:32:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 12:32:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 12:32:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 12:32:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 12:32:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 12:32:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 12:32:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 12:32:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 12:32:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-04 12:32:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 12:32:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 12:32:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:32:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 12:32:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 12:32:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 12:32:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 12:32:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-04 12:32:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 12:32:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 12:32:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 12:32:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 12:32:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 12:32:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 12:32:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 12:32:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 12:32:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 12:32:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 12:32:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 12:32:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 12:32:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 12:32:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 12:32:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 12:32:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 12:32:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 12:32:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 12:32:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 12:32:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 12:32:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:32:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 12:32:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:32:02,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:32:02,936 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 12:32:02,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:32:02 BoogieIcfgContainer [2020-09-04 12:32:02,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:32:02,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:32:02,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:32:02,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:32:02,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:32:00" (1/3) ... [2020-09-04 12:32:02,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f5eb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:32:02, skipping insertion in model container [2020-09-04 12:32:02,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:32:01" (2/3) ... [2020-09-04 12:32:02,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f5eb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:32:02, skipping insertion in model container [2020-09-04 12:32:02,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:32:02" (3/3) ... [2020-09-04 12:32:02,951 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2020-09-04 12:32:02,962 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:32:02,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:32:02,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:32:03,026 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:32:03,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:32:03,027 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:32:03,027 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:32:03,027 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:32:03,027 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:32:03,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:32:03,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:32:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-04 12:32:03,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 12:32:03,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:03,065 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] [2020-09-04 12:32:03,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash -884456721, now seen corresponding path program 1 times [2020-09-04 12:32:03,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:03,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964770762] [2020-09-04 12:32:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,805 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:03,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 12:32:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 12:32:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:03,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964770762] [2020-09-04 12:32:03,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:03,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 12:32:03,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910141930] [2020-09-04 12:32:03,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 12:32:03,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 12:32:04,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:32:04,016 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2020-09-04 12:32:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:05,000 INFO L93 Difference]: Finished difference Result 248 states and 328 transitions. [2020-09-04 12:32:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 12:32:05,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-04 12:32:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:05,019 INFO L225 Difference]: With dead ends: 248 [2020-09-04 12:32:05,019 INFO L226 Difference]: Without dead ends: 139 [2020-09-04 12:32:05,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:32:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-04 12:32:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 110. [2020-09-04 12:32:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 12:32:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2020-09-04 12:32:05,115 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 51 [2020-09-04 12:32:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:05,116 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2020-09-04 12:32:05,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 12:32:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2020-09-04 12:32:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 12:32:05,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:05,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:32:05,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:32:05,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:05,121 INFO L82 PathProgramCache]: Analyzing trace with hash -101366549, now seen corresponding path program 1 times [2020-09-04 12:32:05,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:05,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440392585] [2020-09-04 12:32:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,445 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 12:32:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 12:32:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:05,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440392585] [2020-09-04 12:32:05,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:05,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 12:32:05,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095730310] [2020-09-04 12:32:05,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 12:32:05,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:05,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 12:32:05,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 12:32:05,515 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 5 states. [2020-09-04 12:32:06,003 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:06,729 INFO L93 Difference]: Finished difference Result 193 states and 239 transitions. [2020-09-04 12:32:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 12:32:06,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-04 12:32:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:06,733 INFO L225 Difference]: With dead ends: 193 [2020-09-04 12:32:06,733 INFO L226 Difference]: Without dead ends: 129 [2020-09-04 12:32:06,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 12:32:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-04 12:32:06,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-09-04 12:32:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-04 12:32:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2020-09-04 12:32:06,769 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 52 [2020-09-04 12:32:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:06,770 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2020-09-04 12:32:06,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 12:32:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2020-09-04 12:32:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-04 12:32:06,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:06,772 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] [2020-09-04 12:32:06,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 12:32:06,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash -388267202, now seen corresponding path program 1 times [2020-09-04 12:32:06,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:06,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250242555] [2020-09-04 12:32:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,167 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-04 12:32:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 12:32:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:07,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250242555] [2020-09-04 12:32:07,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:07,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 12:32:07,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249440668] [2020-09-04 12:32:07,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 12:32:07,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:07,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 12:32:07,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-04 12:32:07,311 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 9 states. [2020-09-04 12:32:07,697 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:08,072 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:08,381 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:08,704 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:09,769 INFO L93 Difference]: Finished difference Result 202 states and 254 transitions. [2020-09-04 12:32:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 12:32:09,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-04 12:32:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:09,774 INFO L225 Difference]: With dead ends: 202 [2020-09-04 12:32:09,774 INFO L226 Difference]: Without dead ends: 129 [2020-09-04 12:32:09,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-04 12:32:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-04 12:32:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-09-04 12:32:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-04 12:32:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-09-04 12:32:09,807 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 56 [2020-09-04 12:32:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:09,808 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-09-04 12:32:09,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 12:32:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-09-04 12:32:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-04 12:32:09,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:09,811 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] [2020-09-04 12:32:09,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 12:32:09,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:09,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1251165603, now seen corresponding path program 1 times [2020-09-04 12:32:09,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:09,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800712326] [2020-09-04 12:32:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,160 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-04 12:32:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:32:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-04 12:32:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 12:32:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:10,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800712326] [2020-09-04 12:32:10,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:10,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 12:32:10,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271614153] [2020-09-04 12:32:10,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 12:32:10,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:10,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 12:32:10,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 12:32:10,271 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2020-09-04 12:32:10,688 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:11,942 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:12,452 INFO L93 Difference]: Finished difference Result 287 states and 364 transitions. [2020-09-04 12:32:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 12:32:12,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-09-04 12:32:12,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:12,456 INFO L225 Difference]: With dead ends: 287 [2020-09-04 12:32:12,457 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 12:32:12,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-04 12:32:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 12:32:12,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 168. [2020-09-04 12:32:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-04 12:32:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 195 transitions. [2020-09-04 12:32:12,517 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 195 transitions. Word has length 64 [2020-09-04 12:32:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:12,518 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 195 transitions. [2020-09-04 12:32:12,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 12:32:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 195 transitions. [2020-09-04 12:32:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-04 12:32:12,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:12,520 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] [2020-09-04 12:32:12,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 12:32:12,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash 155242328, now seen corresponding path program 1 times [2020-09-04 12:32:12,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:12,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582796578] [2020-09-04 12:32:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,842 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-04 12:32:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:32:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:32:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:32:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-04 12:32:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-04 12:32:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:12,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582796578] [2020-09-04 12:32:12,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:12,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 12:32:12,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821922705] [2020-09-04 12:32:12,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 12:32:12,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:12,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 12:32:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-04 12:32:12,959 INFO L87 Difference]: Start difference. First operand 168 states and 195 transitions. Second operand 9 states. [2020-09-04 12:32:13,437 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:14,714 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:15,060 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:15,378 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:15,666 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:16,575 INFO L93 Difference]: Finished difference Result 495 states and 636 transitions. [2020-09-04 12:32:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 12:32:16,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-09-04 12:32:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:16,582 INFO L225 Difference]: With dead ends: 495 [2020-09-04 12:32:16,582 INFO L226 Difference]: Without dead ends: 355 [2020-09-04 12:32:16,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-04 12:32:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-09-04 12:32:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 284. [2020-09-04 12:32:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-04 12:32:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 330 transitions. [2020-09-04 12:32:16,660 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 330 transitions. Word has length 78 [2020-09-04 12:32:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:16,661 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 330 transitions. [2020-09-04 12:32:16,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 12:32:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 330 transitions. [2020-09-04 12:32:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-04 12:32:16,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:16,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:32:16,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 12:32:16,663 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:16,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1734675892, now seen corresponding path program 1 times [2020-09-04 12:32:16,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:16,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681024017] [2020-09-04 12:32:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,051 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 12:32:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 12:32:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:32:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:32:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:32:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-04 12:32:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-04 12:32:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:17,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681024017] [2020-09-04 12:32:17,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:17,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 12:32:17,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213804045] [2020-09-04 12:32:17,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 12:32:17,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 12:32:17,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-04 12:32:17,231 INFO L87 Difference]: Start difference. First operand 284 states and 330 transitions. Second operand 10 states. [2020-09-04 12:32:17,649 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:18,867 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:19,150 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:19,467 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:19,822 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:20,658 INFO L93 Difference]: Finished difference Result 646 states and 813 transitions. [2020-09-04 12:32:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 12:32:20,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-09-04 12:32:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:20,667 INFO L225 Difference]: With dead ends: 646 [2020-09-04 12:32:20,667 INFO L226 Difference]: Without dead ends: 390 [2020-09-04 12:32:20,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-09-04 12:32:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-09-04 12:32:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 283. [2020-09-04 12:32:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-09-04 12:32:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 327 transitions. [2020-09-04 12:32:20,762 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 327 transitions. Word has length 82 [2020-09-04 12:32:20,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:20,762 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 327 transitions. [2020-09-04 12:32:20,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 12:32:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 327 transitions. [2020-09-04 12:32:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 12:32:20,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:20,766 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] [2020-09-04 12:32:20,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 12:32:20,766 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1892436078, now seen corresponding path program 1 times [2020-09-04 12:32:20,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:20,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788414736] [2020-09-04 12:32:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,095 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 12:32:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 12:32:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:32:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:32:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:32:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-04 12:32:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 12:32:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:21,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788414736] [2020-09-04 12:32:21,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:21,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 12:32:21,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656611224] [2020-09-04 12:32:21,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 12:32:21,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:21,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 12:32:21,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-04 12:32:21,236 INFO L87 Difference]: Start difference. First operand 283 states and 327 transitions. Second operand 10 states. [2020-09-04 12:32:22,201 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:22,504 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 12:32:22,820 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:23,112 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:23,980 INFO L93 Difference]: Finished difference Result 649 states and 823 transitions. [2020-09-04 12:32:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 12:32:23,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-09-04 12:32:23,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:23,984 INFO L225 Difference]: With dead ends: 649 [2020-09-04 12:32:23,984 INFO L226 Difference]: Without dead ends: 394 [2020-09-04 12:32:23,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-04 12:32:23,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-04 12:32:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 293. [2020-09-04 12:32:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-09-04 12:32:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 337 transitions. [2020-09-04 12:32:24,046 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 337 transitions. Word has length 83 [2020-09-04 12:32:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:24,046 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 337 transitions. [2020-09-04 12:32:24,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 12:32:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 337 transitions. [2020-09-04 12:32:24,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 12:32:24,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:24,048 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] [2020-09-04 12:32:24,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 12:32:24,049 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1016327824, now seen corresponding path program 1 times [2020-09-04 12:32:24,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:24,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324055868] [2020-09-04 12:32:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,380 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 12:32:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 12:32:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:32:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:32:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:32:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-04 12:32:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 12:32:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:24,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324055868] [2020-09-04 12:32:24,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:24,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 12:32:24,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628321821] [2020-09-04 12:32:24,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 12:32:24,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:24,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 12:32:24,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-04 12:32:24,574 INFO L87 Difference]: Start difference. First operand 293 states and 337 transitions. Second operand 12 states. [2020-09-04 12:32:25,824 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 12:32:26,147 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:26,461 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:27,238 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:27,585 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:27,900 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 12:32:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:29,014 INFO L93 Difference]: Finished difference Result 673 states and 863 transitions. [2020-09-04 12:32:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 12:32:29,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-09-04 12:32:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:29,024 INFO L225 Difference]: With dead ends: 673 [2020-09-04 12:32:29,024 INFO L226 Difference]: Without dead ends: 408 [2020-09-04 12:32:29,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-04 12:32:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-09-04 12:32:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 301. [2020-09-04 12:32:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-09-04 12:32:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 345 transitions. [2020-09-04 12:32:29,098 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 345 transitions. Word has length 83 [2020-09-04 12:32:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:29,098 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 345 transitions. [2020-09-04 12:32:29,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 12:32:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 345 transitions. [2020-09-04 12:32:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 12:32:29,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:29,100 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] [2020-09-04 12:32:29,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 12:32:29,101 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1094962545, now seen corresponding path program 1 times [2020-09-04 12:32:29,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:29,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154171982] [2020-09-04 12:32:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,470 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 12:32:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 12:32:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:32:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:32:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:32:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-04 12:32:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 12:32:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:29,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154171982] [2020-09-04 12:32:29,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:29,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 12:32:29,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238940473] [2020-09-04 12:32:29,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 12:32:29,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:29,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 12:32:29,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 12:32:29,726 INFO L87 Difference]: Start difference. First operand 301 states and 345 transitions. Second operand 8 states. [2020-09-04 12:32:30,269 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:30,905 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:33,063 INFO L93 Difference]: Finished difference Result 972 states and 1282 transitions. [2020-09-04 12:32:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 12:32:33,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-09-04 12:32:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:33,070 INFO L225 Difference]: With dead ends: 972 [2020-09-04 12:32:33,070 INFO L226 Difference]: Without dead ends: 699 [2020-09-04 12:32:33,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-09-04 12:32:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-09-04 12:32:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 567. [2020-09-04 12:32:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-09-04 12:32:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 673 transitions. [2020-09-04 12:32:33,183 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 673 transitions. Word has length 83 [2020-09-04 12:32:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:33,183 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 673 transitions. [2020-09-04 12:32:33,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 12:32:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 673 transitions. [2020-09-04 12:32:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 12:32:33,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:33,186 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] [2020-09-04 12:32:33,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 12:32:33,186 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1057623401, now seen corresponding path program 1 times [2020-09-04 12:32:33,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:33,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634837053] [2020-09-04 12:32:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,506 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 12:32:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:32:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:32:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 12:32:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 12:32:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 12:32:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 12:32:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-04 12:32:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 12:32:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 12:32:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 12:32:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:32:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 12:32:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-04 12:32:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-04 12:32:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:32:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:32:33,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634837053] [2020-09-04 12:32:33,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:32:33,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 12:32:33,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431226404] [2020-09-04 12:32:33,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 12:32:33,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:32:33,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 12:32:33,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 12:32:33,675 INFO L87 Difference]: Start difference. First operand 567 states and 673 transitions. Second operand 8 states. [2020-09-04 12:32:34,091 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 12:32:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:32:36,189 INFO L93 Difference]: Finished difference Result 1114 states and 1455 transitions. [2020-09-04 12:32:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 12:32:36,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-04 12:32:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:32:36,196 INFO L225 Difference]: With dead ends: 1114 [2020-09-04 12:32:36,196 INFO L226 Difference]: Without dead ends: 1111 [2020-09-04 12:32:36,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-09-04 12:32:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-09-04 12:32:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 919. [2020-09-04 12:32:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-09-04 12:32:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1098 transitions. [2020-09-04 12:32:36,406 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1098 transitions. Word has length 87 [2020-09-04 12:32:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:32:36,406 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1098 transitions. [2020-09-04 12:32:36,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 12:32:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1098 transitions. [2020-09-04 12:32:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-04 12:32:36,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:32:36,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:32:36,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 12:32:36,415 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:32:36,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:32:36,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2007066912, now seen corresponding path program 1 times [2020-09-04 12:32:36,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:32:36,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874044999] [2020-09-04 12:32:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:32:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:32:36,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:32:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:32:36,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:32:36,775 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 12:32:36,776 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 12:32:36,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 12:32:37,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:32:37 BoogieIcfgContainer [2020-09-04 12:32:37,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:32:37,036 INFO L168 Benchmark]: Toolchain (without parser) took 36149.95 ms. Allocated memory was 146.8 MB in the beginning and 606.1 MB in the end (delta: 459.3 MB). Free memory was 101.9 MB in the beginning and 425.0 MB in the end (delta: -323.1 MB). Peak memory consumption was 136.2 MB. Max. memory is 7.1 GB. [2020-09-04 12:32:37,037 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 12:32:37,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.40 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 172.5 MB in the end (delta: -70.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-04 12:32:37,045 INFO L168 Benchmark]: Boogie Preprocessor took 165.34 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 167.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-04 12:32:37,047 INFO L168 Benchmark]: RCFGBuilder took 1212.84 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.7 MB in the beginning and 198.9 MB in the end (delta: -31.1 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-09-04 12:32:37,049 INFO L168 Benchmark]: TraceAbstraction took 34090.31 ms. Allocated memory was 237.0 MB in the beginning and 606.1 MB in the end (delta: 369.1 MB). Free memory was 198.9 MB in the beginning and 425.0 MB in the end (delta: -226.1 MB). Peak memory consumption was 143.0 MB. Max. memory is 7.1 GB. [2020-09-04 12:32:37,058 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 676.40 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 172.5 MB in the end (delta: -70.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.34 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 167.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1212.84 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.7 MB in the beginning and 198.9 MB in the end (delta: -31.1 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34090.31 ms. Allocated memory was 237.0 MB in the beginning and 606.1 MB in the end (delta: 369.1 MB). Free memory was 198.9 MB in the beginning and 425.0 MB in the end (delta: -226.1 MB). Peak memory consumption was 143.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 284]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L292] int pumpRunning = 0; [L293] int systemActive = 1; [L679] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L876] int methAndRunningLastTime ; VAL [\old(cleanupTimeShifts)=175, \old(head)=166, \old(head)=177, \old(methAndRunningLastTime)=173, \old(methaneLevelCritical)=147, \old(pumpRunning)=137, \old(systemActive)=136, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L257] int retValue_acc ; [L258] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L262] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L263] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L264] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L264] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L264] tmp = valid_product() [L266] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L268] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L269] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L250] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L881] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L250] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L251] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L446] int splverifierCounter ; [L447] int tmp ; [L448] int tmp___0 ; [L449] int tmp___1 ; [L450] int tmp___2 ; [L453] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L455] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L457] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L463] tmp = __VERIFIER_nondet_int() [L465] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L467] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L467] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L477] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L115] COND FALSE !(\read(methaneLevelCritical)) [L118] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L477] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L498] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L300] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L307] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L309] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L329] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L332] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L334] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L426] int retValue_acc ; [L427] int tmp ; [L428] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L432] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L165] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L168] COND FALSE !(waterLevel < 2) [L172] retValue_acc = 0 [L173] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L432] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L432] tmp = isHighWaterSensorDry() [L434] COND FALSE !(\read(tmp)) [L437] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L439] retValue_acc = tmp___0 [L440] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L334] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L334] tmp = isHighWaterLevel() [L336] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L338] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L357] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L338] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L309] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L315] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L886] int tmp ; [L887] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L891] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L891] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L895] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L895] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L898] COND FALSE !(\read(methAndRunningLastTime)) [L903] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L315] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L498] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L455] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L457] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L463] tmp = __VERIFIER_nondet_int() [L465] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=2] [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=2] [L498] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L300] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L302] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L91] COND TRUE waterLevel > 0 [L92] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L302] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L307] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L309] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L329] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L332] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L347] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L309] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L315] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L886] int tmp ; [L887] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L891] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L891] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L895] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L895] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L898] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L900] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L284] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.7s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 27.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 974 SDtfs, 2411 SDslu, 1143 SDs, 0 SdLazy, 4916 SolverSat, 1527 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 413 GetRequests, 259 SyntacticMatches, 3 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 841 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 223096 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...