/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:16:43,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:16:43,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:16:43,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:16:43,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:16:43,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:16:43,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:16:43,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:16:43,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:16:43,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:16:43,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:16:43,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:16:43,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:16:43,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:16:43,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:16:43,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:16:43,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:16:43,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:16:43,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:16:43,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:16:43,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:16:43,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:16:43,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:16:43,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:16:43,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:16:43,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:16:43,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:16:43,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:16:43,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:16:43,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:16:43,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:16:43,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:16:43,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:16:43,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:16:43,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:16:43,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:16:43,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:16:43,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:16:43,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:16:43,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:16:43,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:16:43,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:16:43,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:16:43,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:16:43,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:16:43,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:16:43,469 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:16:43,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:16:43,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:16:43,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:16:43,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:16:43,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:16:43,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:16:43,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:16:43,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:16:43,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:16:43,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:16:43,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:16:43,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:16:43,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:16:43,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:16:43,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:16:43,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:16:43,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:16:43,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:16:43,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:16:43,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:16:43,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:16:43,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:16:43,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:16:43,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:16:43,474 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 -> false [2020-08-18 15:16:43,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:16:43,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:16:43,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:16:43,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:16:43,821 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:16:43,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 15:16:43,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/788f3782a/b7a1ae3ce70a40588a77a7490dc9063d/FLAGf9cbf2dd6 [2020-08-18 15:16:44,351 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:16:44,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-08-18 15:16:44,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/788f3782a/b7a1ae3ce70a40588a77a7490dc9063d/FLAGf9cbf2dd6 [2020-08-18 15:16:44,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/788f3782a/b7a1ae3ce70a40588a77a7490dc9063d [2020-08-18 15:16:44,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:16:44,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:16:44,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:16:44,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:16:44,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:16:44,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:16:44" (1/1) ... [2020-08-18 15:16:44,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:44, skipping insertion in model container [2020-08-18 15:16:44,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:16:44" (1/1) ... [2020-08-18 15:16:44,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:16:44,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:16:44,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:16:44,936 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:16:45,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:16:45,069 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:16:45,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45 WrapperNode [2020-08-18 15:16:45,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:16:45,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:16:45,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:16:45,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:16:45,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... [2020-08-18 15:16:45,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... [2020-08-18 15:16:45,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... [2020-08-18 15:16:45,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... [2020-08-18 15:16:45,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... [2020-08-18 15:16:45,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... [2020-08-18 15:16:45,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... [2020-08-18 15:16:45,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:16:45,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:16:45,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:16:45,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:16:45,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:16:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:16:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:16:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:16:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 15:16:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 15:16:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:16:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:16:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:16:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:16:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:16:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:16:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:16:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:16:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:16:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 15:16:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:16:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:16:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:16:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:16:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:16:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:16:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:16:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:16:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:16:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:16:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:16:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:16:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:16:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:16:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:16:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:16:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:16:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:16:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:16:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:16:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:16:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:16:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:16:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:16:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:16:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:16:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:16:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:16:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:16:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:16:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 15:16:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 15:16:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:16:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:16:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:16:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:16:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:16:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:16:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:16:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:16:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:16:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:16:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:16:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:16:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:16:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:16:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:16:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:16:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:16:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:16:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:16:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:16:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:16:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:16:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:16:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:16:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:16:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:16:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:16:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 15:16:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:16:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:16:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:16:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:16:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:16:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:16:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:16:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:16:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:16:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:16:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:16:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:16:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:16:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:16:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:16:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:16:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:16:46,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:16:46,512 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:16:46,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:16:46 BoogieIcfgContainer [2020-08-18 15:16:46,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:16:46,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:16:46,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:16:46,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:16:46,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:16:44" (1/3) ... [2020-08-18 15:16:46,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45038e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:16:46, skipping insertion in model container [2020-08-18 15:16:46,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:45" (2/3) ... [2020-08-18 15:16:46,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45038e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:16:46, skipping insertion in model container [2020-08-18 15:16:46,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:16:46" (3/3) ... [2020-08-18 15:16:46,525 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-08-18 15:16:46,536 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:16:46,544 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:16:46,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:16:46,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:16:46,584 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:16:46,584 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:16:46,584 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:16:46,584 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:16:46,585 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:16:46,585 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:16:46,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:16:46,608 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-18 15:16:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:16:46,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:46,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:46,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:46,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1966863296, now seen corresponding path program 1 times [2020-08-18 15:16:46,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:46,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652986907] [2020-08-18 15:16:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,321 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:16:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 15:16:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:47,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652986907] [2020-08-18 15:16:47,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:47,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:16:47,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661448153] [2020-08-18 15:16:47,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:16:47,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:47,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:16:47,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:16:47,512 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-18 15:16:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:48,419 INFO L93 Difference]: Finished difference Result 274 states and 358 transitions. [2020-08-18 15:16:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:16:48,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 15:16:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:48,436 INFO L225 Difference]: With dead ends: 274 [2020-08-18 15:16:48,436 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 15:16:48,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:16:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 15:16:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2020-08-18 15:16:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 15:16:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-08-18 15:16:48,564 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 51 [2020-08-18 15:16:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:48,566 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-08-18 15:16:48,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:16:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-08-18 15:16:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:16:48,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:48,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:48,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:16:48,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash 335710898, now seen corresponding path program 1 times [2020-08-18 15:16:48,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:48,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101487092] [2020-08-18 15:16:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,913 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:16:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:16:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:48,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101487092] [2020-08-18 15:16:48,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:48,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:16:48,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691262781] [2020-08-18 15:16:48,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:16:48,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:16:48,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:16:48,993 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 5 states. [2020-08-18 15:16:49,495 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:50,233 INFO L93 Difference]: Finished difference Result 219 states and 269 transitions. [2020-08-18 15:16:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:16:50,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 15:16:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:50,237 INFO L225 Difference]: With dead ends: 219 [2020-08-18 15:16:50,237 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 15:16:50,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:16:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 15:16:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 15:16:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 15:16:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-08-18 15:16:50,275 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 52 [2020-08-18 15:16:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:50,275 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-08-18 15:16:50,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:16:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-08-18 15:16:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 15:16:50,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:50,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:50,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:16:50,278 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:50,279 INFO L82 PathProgramCache]: Analyzing trace with hash 727255979, now seen corresponding path program 1 times [2020-08-18 15:16:50,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:50,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689674077] [2020-08-18 15:16:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,605 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:50,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 15:16:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:16:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:50,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689674077] [2020-08-18 15:16:50,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:50,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:16:50,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413200435] [2020-08-18 15:16:50,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:16:50,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:50,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:16:50,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:16:50,690 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 9 states. [2020-08-18 15:16:51,075 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:51,376 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:51,647 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:51,875 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:52,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:52,970 INFO L93 Difference]: Finished difference Result 228 states and 284 transitions. [2020-08-18 15:16:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:16:52,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 15:16:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:52,976 INFO L225 Difference]: With dead ends: 228 [2020-08-18 15:16:52,976 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 15:16:52,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:16:52,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 15:16:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2020-08-18 15:16:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 15:16:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-08-18 15:16:53,010 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 56 [2020-08-18 15:16:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:53,011 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-08-18 15:16:53,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:16:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-08-18 15:16:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 15:16:53,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:53,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:53,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:16:53,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:53,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1730792410, now seen corresponding path program 1 times [2020-08-18 15:16:53,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:53,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917706384] [2020-08-18 15:16:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,288 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:16:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:16:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 15:16:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:53,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917706384] [2020-08-18 15:16:53,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:53,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:16:53,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775320141] [2020-08-18 15:16:53,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:16:53,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:53,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:16:53,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:16:53,418 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 7 states. [2020-08-18 15:16:53,809 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:55,013 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:55,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:55,610 INFO L93 Difference]: Finished difference Result 313 states and 394 transitions. [2020-08-18 15:16:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:16:55,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-18 15:16:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:55,614 INFO L225 Difference]: With dead ends: 313 [2020-08-18 15:16:55,614 INFO L226 Difference]: Without dead ends: 228 [2020-08-18 15:16:55,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:16:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-08-18 15:16:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 182. [2020-08-18 15:16:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 15:16:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2020-08-18 15:16:55,657 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 64 [2020-08-18 15:16:55,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:55,657 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2020-08-18 15:16:55,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:16:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2020-08-18 15:16:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 15:16:55,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:55,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:55,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:16:55,660 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:55,660 INFO L82 PathProgramCache]: Analyzing trace with hash 529777432, now seen corresponding path program 1 times [2020-08-18 15:16:55,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:55,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920437489] [2020-08-18 15:16:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,000 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:56,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:16:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:16:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:16:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 15:16:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:16:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:56,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920437489] [2020-08-18 15:16:56,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:56,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:16:56,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275412271] [2020-08-18 15:16:56,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:16:56,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:56,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:16:56,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:16:56,115 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 9 states. [2020-08-18 15:16:56,544 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:57,562 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:57,887 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:58,415 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:58,676 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:59,558 INFO L93 Difference]: Finished difference Result 537 states and 684 transitions. [2020-08-18 15:16:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 15:16:59,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 15:16:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:59,566 INFO L225 Difference]: With dead ends: 537 [2020-08-18 15:16:59,567 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 15:16:59,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 15:16:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 15:16:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 312. [2020-08-18 15:16:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-18 15:16:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2020-08-18 15:16:59,643 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 78 [2020-08-18 15:16:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:59,643 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2020-08-18 15:16:59,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:16:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2020-08-18 15:16:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 15:16:59,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:59,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:59,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:16:59,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 281843316, now seen corresponding path program 1 times [2020-08-18 15:16:59,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:59,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853706278] [2020-08-18 15:16:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:59,982 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:59,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:17:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:17:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:17:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:17:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:17:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:17:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:17:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 15:17:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 15:17:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:17:00,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853706278] [2020-08-18 15:17:00,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:17:00,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 15:17:00,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509257102] [2020-08-18 15:17:00,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:17:00,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:17:00,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:17:00,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:17:00,171 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand 10 states. [2020-08-18 15:17:00,551 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:17:01,736 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:17:02,722 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:02,963 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:03,241 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:17:03,585 INFO L93 Difference]: Finished difference Result 702 states and 877 transitions. [2020-08-18 15:17:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:17:03,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-18 15:17:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:17:03,591 INFO L225 Difference]: With dead ends: 702 [2020-08-18 15:17:03,592 INFO L226 Difference]: Without dead ends: 418 [2020-08-18 15:17:03,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:17:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-18 15:17:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 311. [2020-08-18 15:17:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 15:17:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2020-08-18 15:17:03,664 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 82 [2020-08-18 15:17:03,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:17:03,665 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2020-08-18 15:17:03,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:17:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2020-08-18 15:17:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 15:17:03,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:03,667 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-08-18 15:17:03,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:17:03,668 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:03,668 INFO L82 PathProgramCache]: Analyzing trace with hash 131138833, now seen corresponding path program 1 times [2020-08-18 15:17:03,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:03,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571747703] [2020-08-18 15:17:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,922 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:17:03,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:17:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:17:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:17:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:17:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:17:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:17:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:17:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:17:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 15:17:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:17:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:17:04,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571747703] [2020-08-18 15:17:04,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:17:04,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 15:17:04,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374434979] [2020-08-18 15:17:04,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:17:04,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:17:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:17:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:17:04,100 INFO L87 Difference]: Start difference. First operand 311 states and 359 transitions. Second operand 10 states. [2020-08-18 15:17:05,223 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:05,496 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:17:05,753 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:06,003 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:17:07,008 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2020-08-18 15:17:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:17:07,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-18 15:17:07,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:17:07,013 INFO L225 Difference]: With dead ends: 709 [2020-08-18 15:17:07,014 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 15:17:07,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:17:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 15:17:07,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 321. [2020-08-18 15:17:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-08-18 15:17:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 369 transitions. [2020-08-18 15:17:07,082 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 369 transitions. Word has length 98 [2020-08-18 15:17:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:17:07,083 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 369 transitions. [2020-08-18 15:17:07,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:17:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 369 transitions. [2020-08-18 15:17:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 15:17:07,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:07,085 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-08-18 15:17:07,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:17:07,086 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:07,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1918249009, now seen corresponding path program 1 times [2020-08-18 15:17:07,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:07,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310274829] [2020-08-18 15:17:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,369 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:17:07,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:17:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:17:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:17:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:17:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:17:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:17:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:17:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:17:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 15:17:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:17:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:17:07,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310274829] [2020-08-18 15:17:07,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:17:07,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:17:07,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820844660] [2020-08-18 15:17:07,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:17:07,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:17:07,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:17:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:17:07,554 INFO L87 Difference]: Start difference. First operand 321 states and 369 transitions. Second operand 12 states. [2020-08-18 15:17:08,349 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:08,600 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:08,861 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:09,498 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:09,763 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:10,012 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:17:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:17:11,070 INFO L93 Difference]: Finished difference Result 729 states and 927 transitions. [2020-08-18 15:17:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:17:11,071 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-18 15:17:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:17:11,074 INFO L225 Difference]: With dead ends: 729 [2020-08-18 15:17:11,074 INFO L226 Difference]: Without dead ends: 436 [2020-08-18 15:17:11,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:17:11,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-08-18 15:17:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 329. [2020-08-18 15:17:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-08-18 15:17:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2020-08-18 15:17:11,151 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 98 [2020-08-18 15:17:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:17:11,152 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2020-08-18 15:17:11,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:17:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2020-08-18 15:17:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 15:17:11,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:11,157 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-08-18 15:17:11,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:17:11,158 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash -948667986, now seen corresponding path program 1 times [2020-08-18 15:17:11,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:11,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268136334] [2020-08-18 15:17:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,429 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:17:11,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:17:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:17:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:17:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:17:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:17:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:17:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:17:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:17:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 15:17:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:17:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:17:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268136334] [2020-08-18 15:17:11,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:17:11,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:17:11,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532323771] [2020-08-18 15:17:11,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:17:11,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:17:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:17:11,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:17:11,571 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand 8 states. [2020-08-18 15:17:11,983 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:17:12,548 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:17:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:17:14,529 INFO L93 Difference]: Finished difference Result 1028 states and 1346 transitions. [2020-08-18 15:17:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 15:17:14,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-18 15:17:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:17:14,535 INFO L225 Difference]: With dead ends: 1028 [2020-08-18 15:17:14,535 INFO L226 Difference]: Without dead ends: 727 [2020-08-18 15:17:14,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:17:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-08-18 15:17:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 595. [2020-08-18 15:17:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-18 15:17:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 705 transitions. [2020-08-18 15:17:14,669 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 705 transitions. Word has length 98 [2020-08-18 15:17:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:17:14,672 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 705 transitions. [2020-08-18 15:17:14,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:17:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 705 transitions. [2020-08-18 15:17:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 15:17:14,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:14,675 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:17:14,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:17:14,675 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:14,675 INFO L82 PathProgramCache]: Analyzing trace with hash -944641720, now seen corresponding path program 1 times [2020-08-18 15:17:14,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:14,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330174725] [2020-08-18 15:17:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,026 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:17:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:17:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:17:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:17:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:17:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:17:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:17:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:17:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:17:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:17:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 15:17:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 15:17:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:17:15,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330174725] [2020-08-18 15:17:15,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:17:15,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 15:17:15,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021184207] [2020-08-18 15:17:15,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 15:17:15,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:17:15,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 15:17:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:17:15,383 INFO L87 Difference]: Start difference. First operand 595 states and 705 transitions. Second operand 18 states. [2020-08-18 15:17:16,244 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:17:16,618 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:17:16,868 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:17:17,102 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:17:17,727 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:17:18,563 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:18,902 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:19,174 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:19,432 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:19,763 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:20,038 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:17:20,651 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 15:17:21,216 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 15:17:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:17:22,813 INFO L93 Difference]: Finished difference Result 1262 states and 1575 transitions. [2020-08-18 15:17:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 15:17:22,814 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-18 15:17:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:17:22,818 INFO L225 Difference]: With dead ends: 1262 [2020-08-18 15:17:22,818 INFO L226 Difference]: Without dead ends: 695 [2020-08-18 15:17:22,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 15:17:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-08-18 15:17:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 572. [2020-08-18 15:17:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-08-18 15:17:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 666 transitions. [2020-08-18 15:17:22,946 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 666 transitions. Word has length 102 [2020-08-18 15:17:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:17:22,946 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 666 transitions. [2020-08-18 15:17:22,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 15:17:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 666 transitions. [2020-08-18 15:17:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 15:17:22,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:22,951 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:17:22,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:17:22,952 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:22,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1654540536, now seen corresponding path program 1 times [2020-08-18 15:17:22,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:22,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842514472] [2020-08-18 15:17:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,306 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:17:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:17:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:17:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:17:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:17:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:17:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:17:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:17:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:17:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:17:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:17:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 15:17:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 15:17:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:17:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:17:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 15:17:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 15:17:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 15:17:23,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842514472] [2020-08-18 15:17:23,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:17:23,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:17:23,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739487384] [2020-08-18 15:17:23,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:17:23,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:17:23,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:17:23,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:17:23,457 INFO L87 Difference]: Start difference. First operand 572 states and 666 transitions. Second operand 9 states. [2020-08-18 15:17:23,989 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:17:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:17:25,742 INFO L93 Difference]: Finished difference Result 1091 states and 1387 transitions. [2020-08-18 15:17:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 15:17:25,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-18 15:17:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:17:25,752 INFO L225 Difference]: With dead ends: 1091 [2020-08-18 15:17:25,753 INFO L226 Difference]: Without dead ends: 1088 [2020-08-18 15:17:25,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-08-18 15:17:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-08-18 15:17:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 901. [2020-08-18 15:17:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-08-18 15:17:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1053 transitions. [2020-08-18 15:17:25,914 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1053 transitions. Word has length 137 [2020-08-18 15:17:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:17:25,915 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1053 transitions. [2020-08-18 15:17:25,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:17:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1053 transitions. [2020-08-18 15:17:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-18 15:17:25,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:25,920 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2020-08-18 15:17:25,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:17:25,920 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:25,921 INFO L82 PathProgramCache]: Analyzing trace with hash -402984640, now seen corresponding path program 1 times [2020-08-18 15:17:25,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:25,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577925489] [2020-08-18 15:17:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:17:25,987 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:17:25,988 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:17:25,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:17:26,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:17:26 BoogieIcfgContainer [2020-08-18 15:17:26,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:17:26,052 INFO L168 Benchmark]: Toolchain (without parser) took 41639.99 ms. Allocated memory was 147.3 MB in the beginning and 588.3 MB in the end (delta: 440.9 MB). Free memory was 102.5 MB in the beginning and 98.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 444.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:17:26,059 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 15:17:26,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.58 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 173.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:17:26,060 INFO L168 Benchmark]: Boogie Preprocessor took 132.93 ms. Allocated memory is still 205.0 MB. Free memory was 173.1 MB in the beginning and 169.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:17:26,063 INFO L168 Benchmark]: RCFGBuilder took 1312.90 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.0 MB in the beginning and 194.8 MB in the end (delta: -25.8 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:17:26,064 INFO L168 Benchmark]: TraceAbstraction took 39527.47 ms. Allocated memory was 235.4 MB in the beginning and 588.3 MB in the end (delta: 352.8 MB). Free memory was 194.8 MB in the beginning and 98.6 MB in the end (delta: 96.2 MB). Peak memory consumption was 449.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:17:26,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 658.58 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 173.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.93 ms. Allocated memory is still 205.0 MB. Free memory was 173.1 MB in the beginning and 169.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1312.90 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.0 MB in the beginning and 194.8 MB in the end (delta: -25.8 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39527.47 ms. Allocated memory was 235.4 MB in the beginning and 588.3 MB in the end (delta: 352.8 MB). Free memory was 194.8 MB in the beginning and 98.6 MB in the end (delta: 96.2 MB). Peak memory consumption was 449.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 830]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L43] int methAndRunningLastTime ; [L251] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L455] int pumpRunning = 0; [L456] int systemActive = 1; [L628] int waterLevel = 1; [L629] int methaneLevelCritical = 0; [L835] int cleanupTimeShifts = 4; [L909] int retValue_acc ; [L910] int tmp ; [L914] FCALL select_helpers() [L915] FCALL select_features() [L916] CALL, EXPR valid_product() [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); [L916] RET, EXPR valid_product() [L916] tmp = valid_product() [L918] COND TRUE \read(tmp) [L920] FCALL setup() [L921] CALL runTest() [L902] CALL __utac_acc__Specification2_spec__1() [L48] methAndRunningLastTime = 0 [L902] RET __utac_acc__Specification2_spec__1() [L903] CALL test() [L724] int splverifierCounter ; [L725] int tmp ; [L726] int tmp___0 ; [L727] int tmp___1 ; [L728] int tmp___2 ; [L731] splverifierCounter = 0 [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp) [L745] CALL waterRise() [L646] COND TRUE waterLevel < 2 [L647] waterLevel = waterLevel + 1 [L745] RET waterRise() [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND FALSE !(\read(pumpRunning)) [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND TRUE ! pumpRunning [L496] CALL, EXPR isHighWaterLevel() [L606] int retValue_acc ; [L607] int tmp ; [L608] int tmp___0 ; [L612] CALL, EXPR isHighWaterSensorDry() [L708] int retValue_acc ; [L711] COND FALSE !(waterLevel < 2) [L715] retValue_acc = 0 [L716] return (retValue_acc); [L612] RET, EXPR isHighWaterSensorDry() [L612] tmp = isHighWaterSensorDry() [L614] COND FALSE !(\read(tmp)) [L617] tmp___0 = 1 [L619] retValue_acc = tmp___0 [L620] return (retValue_acc); [L496] RET, EXPR isHighWaterLevel() [L496] tmp = isHighWaterLevel() [L498] COND TRUE \read(tmp) [L500] CALL activatePump() [L525] int tmp ; [L529] CALL, EXPR isMethaneAlarm() [L550] int retValue_acc ; [L554] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L554] RET, EXPR isMethaneLevelCritical() [L554] retValue_acc = isMethaneLevelCritical() [L556] return (retValue_acc); [L529] RET, EXPR isMethaneAlarm() [L529] tmp = isMethaneAlarm() [L531] COND FALSE !(\read(tmp)) [L535] CALL activatePump__wrappee__highWaterSensor() [L519] pumpRunning = 1 [L535] RET activatePump__wrappee__highWaterSensor() [L500] RET activatePump() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND FALSE !(\read(tmp)) [L76] methAndRunningLastTime = 0 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp___0) [L755] CALL changeMethaneLevel() [L658] COND FALSE !(\read(methaneLevelCritical)) [L661] methaneLevelCritical = 1 [L755] RET changeMethaneLevel() [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND FALSE !(\read(methAndRunningLastTime)) [L70] methAndRunningLastTime = 1 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND TRUE \read(methAndRunningLastTime) [L67] CALL __automaton_fail() [L830] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.4s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 32.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1268 SDtfs, 3482 SDslu, 1740 SDs, 0 SdLazy, 7446 SolverSat, 2227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 969 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1095 NumberOfCodeBlocks, 1095 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 303920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 38/42 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...