/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:03:01,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:03:01,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:03:01,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:03:01,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:03:01,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:03:01,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:03:01,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:03:01,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:03:01,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:03:01,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:03:01,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:03:01,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:03:01,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:03:01,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:03:01,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:03:01,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:03:01,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:03:01,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:03:01,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:03:01,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:03:01,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:03:01,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:03:01,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:03:01,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:03:01,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:03:01,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:03:01,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:03:01,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:03:01,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:03:01,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:03:01,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:03:01,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:03:01,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:03:01,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:03:01,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:03:01,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:03:01,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:03:01,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:03:01,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:03:01,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:03:01,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:03:01,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:03:01,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:03:01,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:03:01,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:03:01,443 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:03:01,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:03:01,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:03:01,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:03:01,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:03:01,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:03:01,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:03:01,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:03:01,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:03:01,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:03:01,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:03:01,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:03:01,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:03:01,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:03:01,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:03:01,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:03:01,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:03:01,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:03:01,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:03:01,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:03:01,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:03:01,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:03:01,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:03:01,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:03:01,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:03:01,448 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:03:01,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:03:01,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:03:01,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:03:01,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:03:01,749 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:03:01,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-21 22:03:01,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cbfe7a14/b17a61e011c3447a86d953af322045db/FLAG68f695089 [2020-08-21 22:03:02,346 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:03:02,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-21 22:03:02,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cbfe7a14/b17a61e011c3447a86d953af322045db/FLAG68f695089 [2020-08-21 22:03:02,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cbfe7a14/b17a61e011c3447a86d953af322045db [2020-08-21 22:03:02,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:03:02,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:03:02,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:03:02,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:03:02,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:03:02,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:03:02" (1/1) ... [2020-08-21 22:03:02,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1208f7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:02, skipping insertion in model container [2020-08-21 22:03:02,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:03:02" (1/1) ... [2020-08-21 22:03:02,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:03:02,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:03:03,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:03:03,126 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:03:03,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:03:03,270 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:03:03,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03 WrapperNode [2020-08-21 22:03:03,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:03:03,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:03:03,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:03:03,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:03:03,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... [2020-08-21 22:03:03,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... [2020-08-21 22:03:03,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... [2020-08-21 22:03:03,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... [2020-08-21 22:03:03,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... [2020-08-21 22:03:03,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... [2020-08-21 22:03:03,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... [2020-08-21 22:03:03,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:03:03,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:03:03,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:03:03,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:03:03,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:03:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:03:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:03:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:03:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 22:03:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:03:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:03:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:03:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:03:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:03:03,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:03:03,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:03:03,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:03:03,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:03:03,470 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:03:03,470 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:03:03,471 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:03:03,471 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:03:03,471 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:03:03,471 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:03:03,471 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:03:03,473 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:03:03,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:03:03,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:03:03,473 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:03:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:03:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:03:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:03:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:03:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:03:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:03:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:03:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:03:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:03:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:03:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:03:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:03:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:03:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:03:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:03:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 22:03:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:03:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:03:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:03:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:03:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:03:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:03:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:03:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:03:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:03:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:03:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:03:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:03:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:03:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:03:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:03:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:03:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:03:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:03:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:03:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:03:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:03:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:03:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:03:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:03:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:03:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:03:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:03:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:03:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:03:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:03:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:03:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:03:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:03:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:03:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:03:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:03:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:03:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:03:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:03:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:03:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:03:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:03:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:03:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:03:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:03:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:03:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:03:04,507 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:03:04,508 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:03:04,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:03:04 BoogieIcfgContainer [2020-08-21 22:03:04,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:03:04,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:03:04,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:03:04,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:03:04,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:03:02" (1/3) ... [2020-08-21 22:03:04,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2fd564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:03:04, skipping insertion in model container [2020-08-21 22:03:04,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:03" (2/3) ... [2020-08-21 22:03:04,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2fd564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:03:04, skipping insertion in model container [2020-08-21 22:03:04,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:03:04" (3/3) ... [2020-08-21 22:03:04,522 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-21 22:03:04,533 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:03:04,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:03:04,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:03:04,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:03:04,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:03:04,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:03:04,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:03:04,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:03:04,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:03:04,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:03:04,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:03:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-21 22:03:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 22:03:04,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:04,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:04,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:04,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:04,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-21 22:03:04,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:04,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5438457] [2020-08-21 22:03:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,322 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:05,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:03:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:03:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:05,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5438457] [2020-08-21 22:03:05,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:05,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:03:05,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756503335] [2020-08-21 22:03:05,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:03:05,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:05,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:03:05,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:03:05,474 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-21 22:03:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:06,633 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-21 22:03:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:03:06,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 22:03:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:06,651 INFO L225 Difference]: With dead ends: 310 [2020-08-21 22:03:06,652 INFO L226 Difference]: Without dead ends: 168 [2020-08-21 22:03:06,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:03:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-21 22:03:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-21 22:03:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 22:03:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-21 22:03:06,797 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-21 22:03:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:06,798 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-21 22:03:06,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:03:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-21 22:03:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 22:03:06,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:06,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:06,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:03:06,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-21 22:03:06,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:06,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583720782] [2020-08-21 22:03:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,202 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:03:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:07,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583720782] [2020-08-21 22:03:07,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:07,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:03:07,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321383266] [2020-08-21 22:03:07,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:03:07,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:07,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:03:07,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:03:07,247 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-21 22:03:07,619 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:08,439 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-21 22:03:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:03:08,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 22:03:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:08,445 INFO L225 Difference]: With dead ends: 230 [2020-08-21 22:03:08,445 INFO L226 Difference]: Without dead ends: 152 [2020-08-21 22:03:08,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:03:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-21 22:03:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-21 22:03:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 22:03:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-21 22:03:08,483 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-21 22:03:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:08,483 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-21 22:03:08,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:03:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-21 22:03:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:03:08,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:08,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:08,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:03:08,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:08,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:08,487 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-21 22:03:08,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:08,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956203021] [2020-08-21 22:03:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,825 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:03:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:03:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:08,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956203021] [2020-08-21 22:03:08,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:08,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:03:08,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918193098] [2020-08-21 22:03:08,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:03:08,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:08,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:03:08,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:03:08,908 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-21 22:03:09,266 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:09,565 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:09,822 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:10,054 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:10,794 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:12,434 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-21 22:03:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:03:12,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 22:03:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:12,442 INFO L225 Difference]: With dead ends: 427 [2020-08-21 22:03:12,442 INFO L226 Difference]: Without dead ends: 327 [2020-08-21 22:03:12,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:03:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-21 22:03:12,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-21 22:03:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-21 22:03:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-21 22:03:12,536 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-21 22:03:12,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:12,537 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-21 22:03:12,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:03:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-21 22:03:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:03:12,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:12,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:12,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:03:12,540 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-21 22:03:12,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:12,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854767366] [2020-08-21 22:03:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,901 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:12,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:03:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:03:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:13,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854767366] [2020-08-21 22:03:13,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:13,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:03:13,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866560595] [2020-08-21 22:03:13,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:03:13,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:13,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:03:13,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:03:13,053 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-21 22:03:13,415 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:13,715 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:13,957 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:14,200 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:14,810 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:15,552 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:15,912 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:16,165 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:16,466 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:16,711 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:17,100 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:17,382 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:17,608 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:19,192 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-21 22:03:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 22:03:19,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 22:03:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:19,204 INFO L225 Difference]: With dead ends: 1013 [2020-08-21 22:03:19,205 INFO L226 Difference]: Without dead ends: 787 [2020-08-21 22:03:19,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 22:03:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-21 22:03:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-21 22:03:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-21 22:03:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-21 22:03:19,364 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-21 22:03:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:19,365 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-21 22:03:19,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:03:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-21 22:03:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 22:03:19,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:19,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:19,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:03:19,369 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-21 22:03:19,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:19,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305992619] [2020-08-21 22:03:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,633 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:19,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:03:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:03:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:03:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:19,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305992619] [2020-08-21 22:03:19,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:19,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:03:19,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910202319] [2020-08-21 22:03:19,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:03:19,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:03:19,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:03:19,705 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-21 22:03:20,018 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:21,779 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-21 22:03:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:03:21,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 22:03:21,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:21,788 INFO L225 Difference]: With dead ends: 1681 [2020-08-21 22:03:21,788 INFO L226 Difference]: Without dead ends: 1015 [2020-08-21 22:03:21,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:03:21,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-21 22:03:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-21 22:03:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-21 22:03:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-21 22:03:22,002 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-21 22:03:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:22,003 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-21 22:03:22,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:03:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-21 22:03:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 22:03:22,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:22,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:22,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:03:22,008 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-21 22:03:22,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:22,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693593909] [2020-08-21 22:03:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,296 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:03:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 22:03:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 22:03:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 22:03:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:03:22,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693593909] [2020-08-21 22:03:22,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:22,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:03:22,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872895054] [2020-08-21 22:03:22,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:03:22,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:22,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:03:22,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:03:22,501 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-21 22:03:23,076 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 22:03:23,661 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:25,597 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:27,168 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-21 22:03:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:03:27,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 22:03:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:27,176 INFO L225 Difference]: With dead ends: 1803 [2020-08-21 22:03:27,176 INFO L226 Difference]: Without dead ends: 1150 [2020-08-21 22:03:27,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 22:03:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-21 22:03:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-21 22:03:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-21 22:03:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-21 22:03:27,471 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-21 22:03:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:27,473 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-21 22:03:27,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:03:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-21 22:03:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 22:03:27,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:27,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:27,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:03:27,482 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:27,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1717622205, now seen corresponding path program 1 times [2020-08-21 22:03:27,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:27,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697779196] [2020-08-21 22:03:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,755 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:03:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 22:03:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 22:03:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 22:03:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 22:03:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 22:03:27,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697779196] [2020-08-21 22:03:27,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:27,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:03:27,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870728601] [2020-08-21 22:03:27,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:03:27,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:27,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:03:27,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:03:27,946 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-21 22:03:29,182 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:29,438 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:03:29,706 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:29,959 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:31,110 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-21 22:03:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:03:31,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-08-21 22:03:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:31,119 INFO L225 Difference]: With dead ends: 2230 [2020-08-21 22:03:31,120 INFO L226 Difference]: Without dead ends: 1199 [2020-08-21 22:03:31,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:03:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-21 22:03:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-21 22:03:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-21 22:03:31,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-21 22:03:31,346 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 126 [2020-08-21 22:03:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:31,347 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-21 22:03:31,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:03:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-21 22:03:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 22:03:31,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:31,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:31,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:03:31,353 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-21 22:03:31,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:31,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209288738] [2020-08-21 22:03:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,689 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:31,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:03:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 22:03:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 22:03:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 22:03:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 22:03:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 22:03:31,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209288738] [2020-08-21 22:03:31,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:31,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:03:31,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357037904] [2020-08-21 22:03:31,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:03:31,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:31,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:03:31,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:03:31,906 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-21 22:03:32,451 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:32,707 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:32,950 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:33,673 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:33,937 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:34,222 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:35,254 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-21 22:03:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:03:35,255 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-21 22:03:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:35,260 INFO L225 Difference]: With dead ends: 1969 [2020-08-21 22:03:35,261 INFO L226 Difference]: Without dead ends: 908 [2020-08-21 22:03:35,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:03:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-21 22:03:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-21 22:03:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-21 22:03:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-21 22:03:35,434 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-21 22:03:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:35,435 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-21 22:03:35,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:03:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-21 22:03:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 22:03:35,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:35,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:35,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:03:35,439 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:35,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:35,440 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-21 22:03:35,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:35,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043117463] [2020-08-21 22:03:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,832 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:03:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 22:03:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 22:03:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 22:03:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 22:03:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:03:36,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043117463] [2020-08-21 22:03:36,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:36,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:03:36,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281842398] [2020-08-21 22:03:36,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:03:36,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:36,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:03:36,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:03:36,036 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-21 22:03:36,450 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:37,280 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:37,562 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:37,808 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:38,034 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:38,260 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:38,628 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:39,204 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:39,471 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:39,746 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:41,509 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-21 22:03:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:03:41,509 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 22:03:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:41,519 INFO L225 Difference]: With dead ends: 2072 [2020-08-21 22:03:41,519 INFO L226 Difference]: Without dead ends: 1389 [2020-08-21 22:03:41,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-21 22:03:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-21 22:03:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-21 22:03:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-21 22:03:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-21 22:03:41,763 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-21 22:03:41,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:41,765 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-21 22:03:41,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:03:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-21 22:03:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-21 22:03:41,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:41,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:41,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:03:41,772 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:41,772 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-21 22:03:41,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:41,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240563720] [2020-08-21 22:03:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,036 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:42,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:03:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:03:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:03:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 22:03:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 22:03:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 22:03:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-21 22:03:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 22:03:42,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240563720] [2020-08-21 22:03:42,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:42,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:03:42,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007163379] [2020-08-21 22:03:42,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:03:42,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:42,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:03:42,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:03:42,248 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-21 22:03:43,090 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:43,329 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:43,573 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:44,041 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:45,222 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:46,304 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-21 22:03:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 22:03:46,305 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-21 22:03:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:46,313 INFO L225 Difference]: With dead ends: 2226 [2020-08-21 22:03:46,313 INFO L226 Difference]: Without dead ends: 1233 [2020-08-21 22:03:46,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:03:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-21 22:03:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-21 22:03:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-21 22:03:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-21 22:03:46,507 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-21 22:03:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:46,507 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-21 22:03:46,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:03:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-21 22:03:46,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-21 22:03:46,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:46,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:46,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:03:46,513 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:46,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:46,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-21 22:03:46,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:46,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613753427] [2020-08-21 22:03:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:03:46,602 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:03:46,602 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:03:46,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:03:46,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:03:46 BoogieIcfgContainer [2020-08-21 22:03:46,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:03:46,670 INFO L168 Benchmark]: Toolchain (without parser) took 44082.87 ms. Allocated memory was 140.0 MB in the beginning and 776.5 MB in the end (delta: 636.5 MB). Free memory was 102.6 MB in the beginning and 557.9 MB in the end (delta: -455.4 MB). Peak memory consumption was 181.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:46,670 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:03:46,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.81 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 171.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:46,673 INFO L168 Benchmark]: Boogie Preprocessor took 107.43 ms. Allocated memory is still 203.4 MB. Free memory was 171.1 MB in the beginning and 166.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:46,677 INFO L168 Benchmark]: RCFGBuilder took 1131.69 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 194.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:46,678 INFO L168 Benchmark]: TraceAbstraction took 42152.72 ms. Allocated memory was 236.5 MB in the beginning and 776.5 MB in the end (delta: 540.0 MB). Free memory was 194.5 MB in the beginning and 557.9 MB in the end (delta: -363.5 MB). Peak memory consumption was 176.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:46,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.81 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 171.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.43 ms. Allocated memory is still 203.4 MB. Free memory was 171.1 MB in the beginning and 166.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1131.69 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 194.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42152.72 ms. Allocated memory was 236.5 MB in the beginning and 776.5 MB in the end (delta: 540.0 MB). Free memory was 194.5 MB in the beginning and 557.9 MB in the end (delta: -363.5 MB). Peak memory consumption was 176.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1357 SDtfs, 3146 SDslu, 1751 SDs, 0 SdLazy, 8576 SolverSat, 2309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 473 GetRequests, 312 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1063 NumberOfCodeBlocks, 1063 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 887 ConstructedInterpolants, 0 QuantifiedInterpolants, 327289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 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...