/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_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 11:27:15,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 11:27:15,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 11:27:15,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 11:27:15,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 11:27:15,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 11:27:15,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 11:27:15,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 11:27:15,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 11:27:15,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 11:27:15,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 11:27:15,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 11:27:15,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 11:27:15,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 11:27:15,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 11:27:15,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 11:27:15,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 11:27:15,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 11:27:15,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 11:27:15,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 11:27:15,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 11:27:15,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 11:27:15,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 11:27:15,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 11:27:15,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 11:27:15,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 11:27:15,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 11:27:15,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 11:27:15,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 11:27:15,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 11:27:15,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 11:27:15,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 11:27:15,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 11:27:15,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 11:27:15,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 11:27:15,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 11:27:15,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 11:27:15,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 11:27:15,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 11:27:15,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 11:27:15,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 11:27:15,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 11:27:15,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 11:27:15,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 11:27:15,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 11:27:15,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 11:27:15,559 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 11:27:15,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 11:27:15,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 11:27:15,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 11:27:15,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 11:27:15,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 11:27:15,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 11:27:15,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 11:27:15,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 11:27:15,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 11:27:15,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 11:27:15,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 11:27:15,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 11:27:15,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 11:27:15,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 11:27:15,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 11:27:15,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 11:27:15,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 11:27:15,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 11:27:15,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 11:27:15,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 11:27:15,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 11:27:15,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 11:27:15,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 11:27:15,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 11:27:15,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 11:27:15,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 11:27:15,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 11:27:15,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 11:27:15,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 11:27:15,882 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 11:27:15,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-07-17 11:27:15,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf97981da/bba895b1bdf14c84b281a277c9afa9a5/FLAGdbd0ade34 [2020-07-17 11:27:16,524 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 11:27:16,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-07-17 11:27:16,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf97981da/bba895b1bdf14c84b281a277c9afa9a5/FLAGdbd0ade34 [2020-07-17 11:27:16,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf97981da/bba895b1bdf14c84b281a277c9afa9a5 [2020-07-17 11:27:16,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 11:27:16,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 11:27:16,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 11:27:16,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 11:27:16,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 11:27:16,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:27:16" (1/1) ... [2020-07-17 11:27:16,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527465e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:16, skipping insertion in model container [2020-07-17 11:27:16,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:27:16" (1/1) ... [2020-07-17 11:27:16,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 11:27:16,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 11:27:17,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:27:17,250 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 11:27:17,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:27:17,459 INFO L208 MainTranslator]: Completed translation [2020-07-17 11:27:17,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17 WrapperNode [2020-07-17 11:27:17,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 11:27:17,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 11:27:17,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 11:27:17,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 11:27:17,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... [2020-07-17 11:27:17,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... [2020-07-17 11:27:17,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... [2020-07-17 11:27:17,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... [2020-07-17 11:27:17,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... [2020-07-17 11:27:17,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... [2020-07-17 11:27:17,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... [2020-07-17 11:27:17,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 11:27:17,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 11:27:17,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 11:27:17,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 11:27:17,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 11:27:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 11:27:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 11:27:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-17 11:27:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-17 11:27:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-17 11:27:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-17 11:27:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-17 11:27:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-17 11:27:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-17 11:27:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-17 11:27:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-17 11:27:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-17 11:27:17,616 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-17 11:27:17,617 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-17 11:27:17,617 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-17 11:27:17,618 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-17 11:27:17,618 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-17 11:27:17,618 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-17 11:27:17,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-17 11:27:17,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-17 11:27:17,618 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-17 11:27:17,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-17 11:27:17,619 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-17 11:27:17,619 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-17 11:27:17,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-17 11:27:17,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-17 11:27:17,620 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-17 11:27:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-17 11:27:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-17 11:27:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-17 11:27:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-17 11:27:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 11:27:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-17 11:27:17,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-17 11:27:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-17 11:27:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-17 11:27:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-17 11:27:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-17 11:27:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 11:27:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 11:27:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-17 11:27:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-17 11:27:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-17 11:27:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-17 11:27:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-17 11:27:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-17 11:27:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-17 11:27:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-17 11:27:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 11:27:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-17 11:27:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-17 11:27:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-17 11:27:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-17 11:27:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-17 11:27:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-17 11:27:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-17 11:27:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-17 11:27:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-17 11:27:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-17 11:27:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-17 11:27:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-17 11:27:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-17 11:27:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-17 11:27:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-17 11:27:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-17 11:27:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-17 11:27:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-17 11:27:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-17 11:27:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-17 11:27:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-17 11:27:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 11:27:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-17 11:27:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 11:27:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 11:27:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-17 11:27:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 11:27:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 11:27:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 11:27:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 11:27:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-17 11:27:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 11:27:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-17 11:27:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-17 11:27:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 11:27:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-17 11:27:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-17 11:27:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-17 11:27:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 11:27:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 11:27:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 11:27:18,692 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 11:27:18,693 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-17 11:27:18,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:27:18 BoogieIcfgContainer [2020-07-17 11:27:18,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 11:27:18,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 11:27:18,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 11:27:18,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 11:27:18,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 11:27:16" (1/3) ... [2020-07-17 11:27:18,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ef250f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:27:18, skipping insertion in model container [2020-07-17 11:27:18,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:27:17" (2/3) ... [2020-07-17 11:27:18,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ef250f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:27:18, skipping insertion in model container [2020-07-17 11:27:18,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:27:18" (3/3) ... [2020-07-17 11:27:18,706 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-07-17 11:27:18,718 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 11:27:18,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 11:27:18,740 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 11:27:18,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 11:27:18,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 11:27:18,766 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 11:27:18,766 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 11:27:18,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 11:27:18,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 11:27:18,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 11:27:18,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 11:27:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-07-17 11:27:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-17 11:27:18,804 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:18,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:27:18,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:18,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1896668179, now seen corresponding path program 1 times [2020-07-17 11:27:18,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:18,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676840434] [2020-07-17 11:27:18,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,445 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:19,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676840434] [2020-07-17 11:27:19,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:19,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 11:27:19,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870090638] [2020-07-17 11:27:19,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 11:27:19,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:19,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 11:27:19,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 11:27:19,606 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-07-17 11:27:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:20,698 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-07-17 11:27:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 11:27:20,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-17 11:27:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:20,715 INFO L225 Difference]: With dead ends: 269 [2020-07-17 11:27:20,715 INFO L226 Difference]: Without dead ends: 146 [2020-07-17 11:27:20,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 11:27:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-17 11:27:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-07-17 11:27:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-17 11:27:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-07-17 11:27:20,806 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-07-17 11:27:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:20,807 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-07-17 11:27:20,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 11:27:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-07-17 11:27:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 11:27:20,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:20,811 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] [2020-07-17 11:27:20,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 11:27:20,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:20,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:20,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507007, now seen corresponding path program 1 times [2020-07-17 11:27:20,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:20,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068594114] [2020-07-17 11:27:20,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,111 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:21,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068594114] [2020-07-17 11:27:21,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:21,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 11:27:21,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972845214] [2020-07-17 11:27:21,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 11:27:21,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 11:27:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 11:27:21,155 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-07-17 11:27:21,594 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:22,318 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-07-17 11:27:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 11:27:22,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-17 11:27:22,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:22,322 INFO L225 Difference]: With dead ends: 193 [2020-07-17 11:27:22,323 INFO L226 Difference]: Without dead ends: 130 [2020-07-17 11:27:22,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 11:27:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-17 11:27:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-07-17 11:27:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-17 11:27:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-07-17 11:27:22,357 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-07-17 11:27:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:22,357 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-07-17 11:27:22,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 11:27:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-07-17 11:27:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-17 11:27:22,359 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:22,360 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] [2020-07-17 11:27:22,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 11:27:22,360 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:22,360 INFO L82 PathProgramCache]: Analyzing trace with hash -421022276, now seen corresponding path program 1 times [2020-07-17 11:27:22,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:22,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996613647] [2020-07-17 11:27:22,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,649 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:22,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996613647] [2020-07-17 11:27:22,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:22,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 11:27:22,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469251210] [2020-07-17 11:27:22,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 11:27:22,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 11:27:22,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 11:27:22,766 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-07-17 11:27:23,168 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:23,437 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:23,659 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:23,898 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:24,619 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:25,917 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-07-17 11:27:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 11:27:25,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-07-17 11:27:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:25,923 INFO L225 Difference]: With dead ends: 363 [2020-07-17 11:27:25,923 INFO L226 Difference]: Without dead ends: 282 [2020-07-17 11:27:25,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-07-17 11:27:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-17 11:27:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-07-17 11:27:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-07-17 11:27:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-07-17 11:27:25,992 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-07-17 11:27:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:25,993 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-07-17 11:27:25,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 11:27:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-07-17 11:27:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 11:27:25,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:25,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:27:25,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 11:27:25,996 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:25,996 INFO L82 PathProgramCache]: Analyzing trace with hash 498542477, now seen corresponding path program 1 times [2020-07-17 11:27:25,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:25,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681498764] [2020-07-17 11:27:25,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,332 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:26,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681498764] [2020-07-17 11:27:26,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:26,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 11:27:26,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308223701] [2020-07-17 11:27:26,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 11:27:26,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 11:27:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 11:27:26,411 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 8 states. [2020-07-17 11:27:26,799 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:27,805 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:28,105 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:28,368 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:28,612 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:28,993 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:29,714 INFO L93 Difference]: Finished difference Result 698 states and 907 transitions. [2020-07-17 11:27:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 11:27:29,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-07-17 11:27:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:29,723 INFO L225 Difference]: With dead ends: 698 [2020-07-17 11:27:29,724 INFO L226 Difference]: Without dead ends: 506 [2020-07-17 11:27:29,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-07-17 11:27:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-07-17 11:27:29,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 387. [2020-07-17 11:27:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-07-17 11:27:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2020-07-17 11:27:29,840 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 57 [2020-07-17 11:27:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:29,841 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2020-07-17 11:27:29,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 11:27:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2020-07-17 11:27:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 11:27:29,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:29,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:27:29,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 11:27:29,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:29,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1390027601, now seen corresponding path program 1 times [2020-07-17 11:27:29,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:29,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146906307] [2020-07-17 11:27:29,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,136 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:30,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146906307] [2020-07-17 11:27:30,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:30,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 11:27:30,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444322852] [2020-07-17 11:27:30,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 11:27:30,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:30,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 11:27:30,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 11:27:30,215 INFO L87 Difference]: Start difference. First operand 387 states and 466 transitions. Second operand 9 states. [2020-07-17 11:27:30,596 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:31,545 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:31,864 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:32,118 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:32,572 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:32,832 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:33,621 INFO L93 Difference]: Finished difference Result 1120 states and 1488 transitions. [2020-07-17 11:27:33,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 11:27:33,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-07-17 11:27:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:33,628 INFO L225 Difference]: With dead ends: 1120 [2020-07-17 11:27:33,629 INFO L226 Difference]: Without dead ends: 757 [2020-07-17 11:27:33,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-07-17 11:27:33,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-07-17 11:27:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 599. [2020-07-17 11:27:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-07-17 11:27:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 735 transitions. [2020-07-17 11:27:33,748 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 735 transitions. Word has length 61 [2020-07-17 11:27:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:33,749 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 735 transitions. [2020-07-17 11:27:33,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 11:27:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 735 transitions. [2020-07-17 11:27:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-17 11:27:33,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:33,751 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] [2020-07-17 11:27:33,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 11:27:33,752 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:33,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1223870708, now seen corresponding path program 1 times [2020-07-17 11:27:33,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:33,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680202594] [2020-07-17 11:27:33,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,009 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:34,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680202594] [2020-07-17 11:27:34,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:34,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 11:27:34,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310437823] [2020-07-17 11:27:34,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 11:27:34,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:34,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 11:27:34,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 11:27:34,187 INFO L87 Difference]: Start difference. First operand 599 states and 735 transitions. Second operand 9 states. [2020-07-17 11:27:34,740 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 11:27:35,625 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:35,876 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-17 11:27:36,157 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:36,425 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-17 11:27:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:38,053 INFO L93 Difference]: Finished difference Result 2076 states and 2949 transitions. [2020-07-17 11:27:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 11:27:38,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-07-17 11:27:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:38,070 INFO L225 Difference]: With dead ends: 2076 [2020-07-17 11:27:38,071 INFO L226 Difference]: Without dead ends: 1501 [2020-07-17 11:27:38,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-07-17 11:27:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-07-17 11:27:38,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1127. [2020-07-17 11:27:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-07-17 11:27:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1380 transitions. [2020-07-17 11:27:38,376 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1380 transitions. Word has length 78 [2020-07-17 11:27:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:38,377 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1380 transitions. [2020-07-17 11:27:38,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 11:27:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1380 transitions. [2020-07-17 11:27:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-17 11:27:38,383 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:38,384 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] [2020-07-17 11:27:38,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 11:27:38,384 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:38,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1060992747, now seen corresponding path program 1 times [2020-07-17 11:27:38,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:38,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722674566] [2020-07-17 11:27:38,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,641 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:38,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722674566] [2020-07-17 11:27:38,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:38,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 11:27:38,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106099568] [2020-07-17 11:27:38,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 11:27:38,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:38,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 11:27:38,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 11:27:38,758 INFO L87 Difference]: Start difference. First operand 1127 states and 1380 transitions. Second operand 9 states. [2020-07-17 11:27:39,814 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 11:27:40,089 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-17 11:27:40,365 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:40,648 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:41,850 INFO L93 Difference]: Finished difference Result 2617 states and 3478 transitions. [2020-07-17 11:27:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 11:27:41,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-07-17 11:27:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:41,861 INFO L225 Difference]: With dead ends: 2617 [2020-07-17 11:27:41,862 INFO L226 Difference]: Without dead ends: 1514 [2020-07-17 11:27:41,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-17 11:27:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-07-17 11:27:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1167. [2020-07-17 11:27:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-07-17 11:27:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1420 transitions. [2020-07-17 11:27:42,152 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1420 transitions. Word has length 78 [2020-07-17 11:27:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:42,153 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1420 transitions. [2020-07-17 11:27:42,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 11:27:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1420 transitions. [2020-07-17 11:27:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-17 11:27:42,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:42,156 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] [2020-07-17 11:27:42,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 11:27:42,156 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:42,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1570465837, now seen corresponding path program 1 times [2020-07-17 11:27:42,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:42,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608470146] [2020-07-17 11:27:42,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,458 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 11:27:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:27:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:27:42,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608470146] [2020-07-17 11:27:42,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:27:42,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 11:27:42,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556454766] [2020-07-17 11:27:42,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 11:27:42,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:27:42,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 11:27:42,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-17 11:27:42,597 INFO L87 Difference]: Start difference. First operand 1167 states and 1420 transitions. Second operand 11 states. [2020-07-17 11:27:43,183 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:43,424 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:43,654 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:44,299 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:44,581 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:44,808 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 11:27:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:27:45,872 INFO L93 Difference]: Finished difference Result 2323 states and 3044 transitions. [2020-07-17 11:27:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 11:27:45,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-07-17 11:27:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:27:45,883 INFO L225 Difference]: With dead ends: 2323 [2020-07-17 11:27:45,883 INFO L226 Difference]: Without dead ends: 1180 [2020-07-17 11:27:45,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-07-17 11:27:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-07-17 11:27:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 949. [2020-07-17 11:27:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-07-17 11:27:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1124 transitions. [2020-07-17 11:27:46,053 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1124 transitions. Word has length 78 [2020-07-17 11:27:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:27:46,053 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1124 transitions. [2020-07-17 11:27:46,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 11:27:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1124 transitions. [2020-07-17 11:27:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-17 11:27:46,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:27:46,056 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] [2020-07-17 11:27:46,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 11:27:46,057 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:27:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:27:46,057 INFO L82 PathProgramCache]: Analyzing trace with hash -341045236, now seen corresponding path program 1 times [2020-07-17 11:27:46,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:27:46,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140936419] [2020-07-17 11:27:46,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:27:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:27:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:27:46,299 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 11:27:46,299 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 11:27:46,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 11:27:46,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 11:27:46 BoogieIcfgContainer [2020-07-17 11:27:46,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 11:27:46,586 INFO L168 Benchmark]: Toolchain (without parser) took 29769.22 ms. Allocated memory was 137.4 MB in the beginning and 643.3 MB in the end (delta: 505.9 MB). Free memory was 100.2 MB in the beginning and 571.7 MB in the end (delta: -471.5 MB). Peak memory consumption was 536.9 MB. Max. memory is 7.1 GB. [2020-07-17 11:27:46,586 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 137.4 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 11:27:46,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.03 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 100.0 MB in the beginning and 172.4 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-07-17 11:27:46,588 INFO L168 Benchmark]: Boogie Preprocessor took 92.44 ms. Allocated memory is still 202.4 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-17 11:27:46,595 INFO L168 Benchmark]: RCFGBuilder took 1145.05 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 168.3 MB in the beginning and 201.8 MB in the end (delta: -33.5 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-07-17 11:27:46,598 INFO L168 Benchmark]: TraceAbstraction took 27884.64 ms. Allocated memory was 233.8 MB in the beginning and 643.3 MB in the end (delta: 409.5 MB). Free memory was 200.3 MB in the beginning and 571.7 MB in the end (delta: -371.4 MB). Peak memory consumption was 540.6 MB. Max. memory is 7.1 GB. [2020-07-17 11:27:46,606 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 137.4 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.03 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 100.0 MB in the beginning and 172.4 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.44 ms. Allocated memory is still 202.4 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1145.05 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 168.3 MB in the beginning and 201.8 MB in the end (delta: -33.5 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27884.64 ms. Allocated memory was 233.8 MB in the beginning and 643.3 MB in the end (delta: 409.5 MB). Free memory was 200.3 MB in the beginning and 571.7 MB in the end (delta: -371.4 MB). Peak memory consumption was 540.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=173, \old(head)=176, \old(head)=167, \old(methaneLevelCritical)=142, \old(pumpRunning)=131, \old(systemActive)=130, \old(waterLevel)=136, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L528] int retValue_acc ; [L529] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L533] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L535] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L535] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L535] tmp = valid_product() [L537] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L539] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L540] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L522] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L190] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L192] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L198] tmp = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L202] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L202] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L208] tmp___0 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L212] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L212] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L218] tmp___2 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___2=1, waterLevel=2] [L235] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L257] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L264] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L286] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L289] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L291] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L383] int retValue_acc ; [L384] int tmp ; [L385] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L389] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L127] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L389] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L396] retValue_acc = tmp___0 [L397] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L291] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L291] tmp = isHighWaterLevel() [L293] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L295] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L314] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L295] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L266] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L272] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L152] int tmp ; [L153] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L157] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L157] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L157] tmp = isMethaneLevelCritical() [L159] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L161] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L161] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L161] tmp___0 = isPumpRunning() [L163] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L165] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L145] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 799 SDtfs, 1497 SDslu, 1050 SDs, 0 SdLazy, 4693 SolverSat, 935 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1167occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1352 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 143632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...