/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:57:41,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:57:41,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:57:41,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:57:41,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:57:41,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:57:41,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:57:41,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:57:41,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:57:41,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:57:41,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:57:41,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:57:41,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:57:41,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:57:41,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:57:41,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:57:41,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:57:41,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:57:41,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:57:41,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:57:41,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:57:41,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:57:41,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:57:41,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:57:41,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:57:41,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:57:41,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:57:41,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:57:41,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:57:41,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:57:41,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:57:41,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:57:41,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:57:41,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:57:41,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:57:41,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:57:41,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:57:41,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:57:41,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:57:41,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:57:41,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:57:41,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 11:57:41,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:57:41,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:57:41,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:57:41,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:57:41,592 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:57:41,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:57:41,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:57:41,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:57:41,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:57:41,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:57:41,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:57:41,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:57:41,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:57:41,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:57:41,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:57:41,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:57:41,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:57:41,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:57:41,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:57:41,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:57:41,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:57:41,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:57:41,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:57:41,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:57:41,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:57:41,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:57:41,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:57:41,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:57:41,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:57:41,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:57:41,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:57:41,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:57:41,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:57:41,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:57:41,920 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:57:41,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-18 11:57:41,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91e3ff17/2941daf0956046fe8477950047e2a195/FLAG230324775 [2020-08-18 11:57:42,478 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:57:42,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-18 11:57:42,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91e3ff17/2941daf0956046fe8477950047e2a195/FLAG230324775 [2020-08-18 11:57:42,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91e3ff17/2941daf0956046fe8477950047e2a195 [2020-08-18 11:57:42,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:57:42,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:57:42,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:42,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:57:42,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:57:42,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:42" (1/1) ... [2020-08-18 11:57:42,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9a5625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:42, skipping insertion in model container [2020-08-18 11:57:42,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:42" (1/1) ... [2020-08-18 11:57:42,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:57:42,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:57:43,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:43,353 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:57:43,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:43,462 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:57:43,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43 WrapperNode [2020-08-18 11:57:43,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:43,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:57:43,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:57:43,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:57:43,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... [2020-08-18 11:57:43,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... [2020-08-18 11:57:43,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... [2020-08-18 11:57:43,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... [2020-08-18 11:57:43,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... [2020-08-18 11:57:43,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... [2020-08-18 11:57:43,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... [2020-08-18 11:57:43,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:57:43,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:57:43,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:57:43,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:57:43,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:57:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:57:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:57:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:57:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:57:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:57:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:57:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:57:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:57:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:57:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:57:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:57:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:57:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:57:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:57:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:57:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:57:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:57:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:57:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:57:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:57:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:57:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:57:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:57:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:57:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:57:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:57:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:57:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:57:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:57:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:57:43,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:57:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:57:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:57:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:57:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:57:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:57:43,634 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:57:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:57:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:57:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:57:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:57:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:57:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:57:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:57:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:57:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:57:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:57:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:57:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:57:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:57:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:57:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:57:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:57:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:57:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:57:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:57:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:57:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:57:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:57:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:57:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:57:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:57:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:57:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:57:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:57:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:57:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:57:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:57:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:57:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:57:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:57:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:57:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:57:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:57:44,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:57:44,761 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:57:44,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:44 BoogieIcfgContainer [2020-08-18 11:57:44,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:57:44,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:57:44,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:57:44,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:57:44,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:57:42" (1/3) ... [2020-08-18 11:57:44,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2869e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:44, skipping insertion in model container [2020-08-18 11:57:44,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:43" (2/3) ... [2020-08-18 11:57:44,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2869e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:44, skipping insertion in model container [2020-08-18 11:57:44,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:44" (3/3) ... [2020-08-18 11:57:44,778 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2020-08-18 11:57:44,789 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:57:44,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:57:44,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:57:44,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:57:44,840 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:57:44,840 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:57:44,840 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:57:44,841 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:57:44,841 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:57:44,841 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:57:44,841 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:57:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-08-18 11:57:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:57:44,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:44,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:44,875 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:44,881 INFO L82 PathProgramCache]: Analyzing trace with hash -438635737, now seen corresponding path program 1 times [2020-08-18 11:57:44,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:44,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467610979] [2020-08-18 11:57:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,563 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:57:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:45,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467610979] [2020-08-18 11:57:45,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:45,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:57:45,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717341123] [2020-08-18 11:57:45,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:57:45,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:57:45,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:57:45,735 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 3 states. [2020-08-18 11:57:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:46,609 INFO L93 Difference]: Finished difference Result 211 states and 284 transitions. [2020-08-18 11:57:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:57:46,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 11:57:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:46,626 INFO L225 Difference]: With dead ends: 211 [2020-08-18 11:57:46,626 INFO L226 Difference]: Without dead ends: 115 [2020-08-18 11:57:46,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:57:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-18 11:57:46,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2020-08-18 11:57:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-18 11:57:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-18 11:57:46,709 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 52 [2020-08-18 11:57:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:46,710 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-18 11:57:46,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:57:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-18 11:57:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 11:57:46,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:46,714 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] [2020-08-18 11:57:46,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:57:46,715 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1274777231, now seen corresponding path program 1 times [2020-08-18 11:57:46,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:46,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914372749] [2020-08-18 11:57:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,022 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:57:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:57:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:57:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:57:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:47,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914372749] [2020-08-18 11:57:47,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:47,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:57:47,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44676136] [2020-08-18 11:57:47,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:57:47,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:47,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:57:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:57:47,091 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 4 states. [2020-08-18 11:57:47,514 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:47,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:47,961 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2020-08-18 11:57:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:57:47,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 11:57:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:47,964 INFO L225 Difference]: With dead ends: 144 [2020-08-18 11:57:47,965 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 11:57:47,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:57:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 11:57:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 11:57:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 11:57:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 11:57:48,021 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 53 [2020-08-18 11:57:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:48,022 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 11:57:48,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:57:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 11:57:48,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 11:57:48,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:48,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:48,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:57:48,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:48,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:48,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1377435257, now seen corresponding path program 1 times [2020-08-18 11:57:48,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:48,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684622786] [2020-08-18 11:57:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,364 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:57:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:57:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:57:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:48,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684622786] [2020-08-18 11:57:48,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:48,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:57:48,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479421260] [2020-08-18 11:57:48,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:57:48,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:48,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:57:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:57:48,420 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 11:57:48,697 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:57:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:49,217 INFO L93 Difference]: Finished difference Result 153 states and 189 transitions. [2020-08-18 11:57:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:57:49,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-08-18 11:57:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:49,221 INFO L225 Difference]: With dead ends: 153 [2020-08-18 11:57:49,221 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 11:57:49,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:57:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 11:57:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 11:57:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 11:57:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-08-18 11:57:49,249 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 57 [2020-08-18 11:57:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:49,249 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-08-18 11:57:49,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:57:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-08-18 11:57:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 11:57:49,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:49,251 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] [2020-08-18 11:57:49,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:57:49,251 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1699431063, now seen corresponding path program 1 times [2020-08-18 11:57:49,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:49,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154647900] [2020-08-18 11:57:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,514 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:57:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:57:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:57:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 11:57:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 11:57:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:49,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154647900] [2020-08-18 11:57:49,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:49,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:57:49,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590379913] [2020-08-18 11:57:49,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:57:49,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:49,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:57:49,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:57:49,594 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 7 states. [2020-08-18 11:57:49,945 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:57:50,787 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:57:51,046 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:57:51,274 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:57:51,525 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:57:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:51,774 INFO L93 Difference]: Finished difference Result 196 states and 245 transitions. [2020-08-18 11:57:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:57:51,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-08-18 11:57:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:51,778 INFO L225 Difference]: With dead ends: 196 [2020-08-18 11:57:51,778 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 11:57:51,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:57:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 11:57:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2020-08-18 11:57:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 11:57:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-18 11:57:51,818 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 60 [2020-08-18 11:57:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:51,818 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-18 11:57:51,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:57:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-18 11:57:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 11:57:51,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:51,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:51,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:57:51,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:51,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1843670287, now seen corresponding path program 1 times [2020-08-18 11:57:51,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:51,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294306004] [2020-08-18 11:57:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,079 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:57:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:57:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:57:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:57:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:52,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294306004] [2020-08-18 11:57:52,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:52,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:57:52,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089358562] [2020-08-18 11:57:52,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:57:52,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:52,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:57:52,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:57:52,136 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 5 states. [2020-08-18 11:57:52,414 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:57:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:52,887 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2020-08-18 11:57:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 11:57:52,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-08-18 11:57:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:52,889 INFO L225 Difference]: With dead ends: 192 [2020-08-18 11:57:52,890 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 11:57:52,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:57:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 11:57:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-08-18 11:57:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-18 11:57:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-08-18 11:57:52,922 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 64 [2020-08-18 11:57:52,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:52,923 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-08-18 11:57:52,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:57:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-08-18 11:57:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 11:57:52,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:52,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:52,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:57:52,925 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:52,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2045663983, now seen corresponding path program 1 times [2020-08-18 11:57:52,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:52,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659493131] [2020-08-18 11:57:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:57:52,990 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:57:52,990 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:57:52,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:57:53,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:57:53 BoogieIcfgContainer [2020-08-18 11:57:53,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:57:53,017 INFO L168 Benchmark]: Toolchain (without parser) took 10199.25 ms. Allocated memory was 148.4 MB in the beginning and 412.1 MB in the end (delta: 263.7 MB). Free memory was 102.0 MB in the beginning and 286.4 MB in the end (delta: -184.5 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:57:53,018 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:57:53,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.29 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 174.5 MB in the end (delta: -72.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-18 11:57:53,020 INFO L168 Benchmark]: Boogie Preprocessor took 86.45 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 170.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-18 11:57:53,021 INFO L168 Benchmark]: RCFGBuilder took 1216.76 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 170.0 MB in the beginning and 200.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:57:53,022 INFO L168 Benchmark]: TraceAbstraction took 8246.84 ms. Allocated memory was 234.9 MB in the beginning and 412.1 MB in the end (delta: 177.2 MB). Free memory was 200.4 MB in the beginning and 286.4 MB in the end (delta: -86.0 MB). Peak memory consumption was 91.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:57:53,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.29 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 174.5 MB in the end (delta: -72.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.45 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 170.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1216.76 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 170.0 MB in the beginning and 200.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8246.84 ms. Allocated memory was 234.9 MB in the beginning and 412.1 MB in the end (delta: 177.2 MB). Free memory was 200.4 MB in the beginning and 286.4 MB in the end (delta: -86.0 MB). Peak memory consumption was 91.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 302]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int pumpRunning = 0; [L49] int systemActive = 1; [L307] int cleanupTimeShifts = 4; [L403] int waterLevel = 1; [L404] int methaneLevelCritical = 0; [L652] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L380] int retValue_acc ; [L381] int tmp ; [L385] FCALL select_helpers() [L386] FCALL select_features() [L387] CALL, EXPR valid_product() [L253] int retValue_acc ; [L256] retValue_acc = 1 [L257] return (retValue_acc); [L387] RET, EXPR valid_product() [L387] tmp = valid_product() [L389] COND TRUE \read(tmp) [L391] FCALL setup() [L392] CALL runTest() [L374] CALL test() [L160] int splverifierCounter ; [L161] int tmp ; [L162] int tmp___0 ; [L163] int tmp___1 ; [L164] int tmp___2 ; [L167] splverifierCounter = 0 [L169] COND TRUE 1 [L171] COND TRUE splverifierCounter < 4 [L177] tmp = __VERIFIER_nondet_int() [L179] COND TRUE \read(tmp) [L181] CALL waterRise() [L421] COND TRUE waterLevel < 2 [L422] waterLevel = waterLevel + 1 [L181] RET waterRise() [L187] tmp___0 = __VERIFIER_nondet_int() [L189] COND FALSE !(\read(tmp___0)) [L197] tmp___2 = __VERIFIER_nondet_int() [L199] COND TRUE \read(tmp___2) [L212] CALL timeShift() [L56] COND FALSE !(\read(pumpRunning)) [L63] COND TRUE \read(systemActive) [L65] FCALL processEnvironment() [L71] CALL __utac_acc__Specification3_spec__1() [L265] int tmp ; [L266] int tmp___0 ; [L267] int tmp___1 ; [L271] CALL, EXPR isMethaneLevelCritical() [L442] int retValue_acc ; [L445] retValue_acc = methaneLevelCritical [L446] return (retValue_acc); [L271] RET, EXPR isMethaneLevelCritical() [L271] tmp = isMethaneLevelCritical() [L273] COND FALSE !(\read(tmp)) [L277] CALL, EXPR getWaterLevel() [L474] int retValue_acc ; [L477] retValue_acc = waterLevel [L478] return (retValue_acc); [L277] RET, EXPR getWaterLevel() [L277] tmp___0 = getWaterLevel() [L279] COND TRUE tmp___0 == 2 [L281] CALL, EXPR isPumpRunning() [L111] int retValue_acc ; [L114] retValue_acc = pumpRunning [L115] return (retValue_acc); [L281] RET, EXPR isPumpRunning() [L281] tmp___1 = isPumpRunning() [L283] COND FALSE !(\read(tmp___1)) [L287] CALL __automaton_fail() [L302] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 34 procedures, 197 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 366 SDtfs, 443 SDslu, 159 SDs, 0 SdLazy, 702 SolverSat, 237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 96 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 77364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...