/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:48:04,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:48:04,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:48:04,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:48:04,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:48:04,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:48:04,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:48:04,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:48:04,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:48:04,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:48:04,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:48:04,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:48:04,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:48:04,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:48:04,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:48:04,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:48:04,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:48:04,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:48:04,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:48:04,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:48:04,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:48:04,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:48:04,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:48:04,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:48:04,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:48:04,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:48:04,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:48:04,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:48:04,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:48:04,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:48:04,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:48:04,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:48:04,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:48:04,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:48:04,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:48:04,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:48:04,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:48:04,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:48:04,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:48:04,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:48:04,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:48:04,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:48:04,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:48:04,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:48:04,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:48:04,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:48:04,381 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:48:04,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:48:04,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:48:04,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:48:04,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:48:04,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:48:04,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:48:04,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:48:04,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:48:04,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:48:04,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:48:04,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:48:04,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:48:04,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:48:04,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:48:04,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:48:04,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:48:04,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:48:04,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:48:04,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:48:04,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:48:04,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:48:04,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:48:04,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:48:04,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:48:04,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:48:04,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:48:04,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:48:04,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:48:04,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:48:04,742 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:48:04,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-21 14:48:04,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af2032f4/788c4deea5d7485489cd48ee1265018d/FLAG589dbc15d [2020-08-21 14:48:05,327 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:48:05,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-21 14:48:05,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af2032f4/788c4deea5d7485489cd48ee1265018d/FLAG589dbc15d [2020-08-21 14:48:05,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7af2032f4/788c4deea5d7485489cd48ee1265018d [2020-08-21 14:48:05,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:48:05,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:48:05,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:48:05,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:48:05,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:48:05,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:48:05" (1/1) ... [2020-08-21 14:48:05,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:05, skipping insertion in model container [2020-08-21 14:48:05,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:48:05" (1/1) ... [2020-08-21 14:48:05,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:48:05,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:48:06,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:48:06,047 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:48:06,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:48:06,341 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:48:06,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06 WrapperNode [2020-08-21 14:48:06,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:48:06,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:48:06,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:48:06,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:48:06,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... [2020-08-21 14:48:06,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... [2020-08-21 14:48:06,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... [2020-08-21 14:48:06,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... [2020-08-21 14:48:06,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... [2020-08-21 14:48:06,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... [2020-08-21 14:48:06,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... [2020-08-21 14:48:06,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:48:06,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:48:06,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:48:06,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:48:06,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:48:06,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:48:06,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:48:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:48:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:48:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:48:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:48:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:48:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:48:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 14:48:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:48:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:48:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:48:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:48:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:48:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:48:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:48:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:48:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:48:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 14:48:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:48:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 14:48:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:48:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:48:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:48:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:48:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:48:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:48:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:48:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:48:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:48:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:48:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:48:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:48:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:48:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:48:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:48:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:48:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:48:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:48:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:48:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:48:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:48:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:48:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:48:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:48:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:48:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:48:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:48:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:48:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:48:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:48:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:48:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:48:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:48:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:48:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:48:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:48:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:48:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:48:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 14:48:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:48:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:48:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:48:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:48:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:48:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:48:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:48:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:48:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:48:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:48:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:48:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:48:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:48:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:48:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:48:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:48:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:48:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:48:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:48:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:48:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:48:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:48:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:48:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:48:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:48:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:48:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:48:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 14:48:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:48:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 14:48:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:48:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:48:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:48:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:48:07,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:48:07,612 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:48:07,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:48:07 BoogieIcfgContainer [2020-08-21 14:48:07,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:48:07,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:48:07,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:48:07,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:48:07,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:48:05" (1/3) ... [2020-08-21 14:48:07,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4a6cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:48:07, skipping insertion in model container [2020-08-21 14:48:07,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:48:06" (2/3) ... [2020-08-21 14:48:07,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4a6cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:48:07, skipping insertion in model container [2020-08-21 14:48:07,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:48:07" (3/3) ... [2020-08-21 14:48:07,627 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-08-21 14:48:07,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:48:07,647 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:48:07,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:48:07,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:48:07,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:48:07,689 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:48:07,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:48:07,690 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:48:07,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:48:07,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:48:07,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:48:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-21 14:48:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 14:48:07,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:07,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:07,727 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash 580316159, now seen corresponding path program 1 times [2020-08-21 14:48:07,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:07,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656048638] [2020-08-21 14:48:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,491 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:48:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:48:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:48:08,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656048638] [2020-08-21 14:48:08,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:48:08,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:48:08,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692617078] [2020-08-21 14:48:08,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:48:08,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:08,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:48:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:48:08,615 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-21 14:48:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:09,931 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2020-08-21 14:48:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:48:09,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 14:48:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:09,949 INFO L225 Difference]: With dead ends: 318 [2020-08-21 14:48:09,949 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 14:48:09,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:48:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 14:48:10,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2020-08-21 14:48:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 14:48:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-21 14:48:10,046 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 46 [2020-08-21 14:48:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:10,047 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-21 14:48:10,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:48:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-21 14:48:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 14:48:10,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:10,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:10,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:48:10,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:10,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2039927443, now seen corresponding path program 1 times [2020-08-21 14:48:10,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:10,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696239284] [2020-08-21 14:48:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,425 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:48:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:48:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:48:10,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696239284] [2020-08-21 14:48:10,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:48:10,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:48:10,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187864149] [2020-08-21 14:48:10,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:48:10,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:48:10,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:48:10,469 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2020-08-21 14:48:10,885 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:11,774 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-08-21 14:48:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:48:11,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 14:48:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:11,781 INFO L225 Difference]: With dead ends: 247 [2020-08-21 14:48:11,781 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 14:48:11,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:48:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 14:48:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-21 14:48:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 14:48:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-21 14:48:11,844 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-08-21 14:48:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:11,844 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-21 14:48:11,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:48:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-21 14:48:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 14:48:11,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:11,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:11,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:48:11,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:11,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:11,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987703, now seen corresponding path program 1 times [2020-08-21 14:48:11,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:11,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207112318] [2020-08-21 14:48:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,151 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:12,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:48:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:48:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:48:12,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207112318] [2020-08-21 14:48:12,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:48:12,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:48:12,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084177787] [2020-08-21 14:48:12,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:48:12,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:12,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:48:12,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:48:12,257 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 8 states. [2020-08-21 14:48:12,641 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:12,950 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:13,182 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:13,418 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:14,656 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2020-08-21 14:48:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:48:14,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 14:48:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:14,660 INFO L225 Difference]: With dead ends: 260 [2020-08-21 14:48:14,661 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 14:48:14,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 14:48:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-21 14:48:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 14:48:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-21 14:48:14,699 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 52 [2020-08-21 14:48:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:14,700 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-21 14:48:14,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:48:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-21 14:48:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 14:48:14,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:14,703 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] [2020-08-21 14:48:14,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:48:14,703 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1745786735, now seen corresponding path program 1 times [2020-08-21 14:48:14,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:14,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505176727] [2020-08-21 14:48:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,090 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:15,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:48:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:48:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 14:48:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:48:15,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505176727] [2020-08-21 14:48:15,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:48:15,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:48:15,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485162569] [2020-08-21 14:48:15,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:48:15,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:15,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:48:15,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:48:15,200 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 6 states. [2020-08-21 14:48:15,575 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:16,869 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:17,569 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-08-21 14:48:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:48:17,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 14:48:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:17,574 INFO L225 Difference]: With dead ends: 365 [2020-08-21 14:48:17,574 INFO L226 Difference]: Without dead ends: 261 [2020-08-21 14:48:17,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:48:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-08-21 14:48:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 218. [2020-08-21 14:48:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 14:48:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 245 transitions. [2020-08-21 14:48:17,630 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 245 transitions. Word has length 65 [2020-08-21 14:48:17,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:17,630 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 245 transitions. [2020-08-21 14:48:17,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:48:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 245 transitions. [2020-08-21 14:48:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 14:48:17,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:17,633 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] [2020-08-21 14:48:17,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:48:17,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash 189412453, now seen corresponding path program 1 times [2020-08-21 14:48:17,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:17,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686751108] [2020-08-21 14:48:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,888 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:48:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:17,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 14:48:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 14:48:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:48:18,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686751108] [2020-08-21 14:48:18,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:48:18,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 14:48:18,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581383884] [2020-08-21 14:48:18,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:48:18,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:48:18,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:48:18,032 INFO L87 Difference]: Start difference. First operand 218 states and 245 transitions. Second operand 11 states. [2020-08-21 14:48:18,602 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:18,873 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:19,120 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:19,817 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:20,071 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:20,362 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:20,607 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:21,603 INFO L93 Difference]: Finished difference Result 456 states and 540 transitions. [2020-08-21 14:48:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:48:21,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-21 14:48:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:21,607 INFO L225 Difference]: With dead ends: 456 [2020-08-21 14:48:21,607 INFO L226 Difference]: Without dead ends: 262 [2020-08-21 14:48:21,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:48:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-21 14:48:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2020-08-21 14:48:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-21 14:48:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2020-08-21 14:48:21,682 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 79 [2020-08-21 14:48:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:21,683 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2020-08-21 14:48:21,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:48:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2020-08-21 14:48:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 14:48:21,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:21,685 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] [2020-08-21 14:48:21,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:48:21,686 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:21,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1196790941, now seen corresponding path program 1 times [2020-08-21 14:48:21,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:21,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678954323] [2020-08-21 14:48:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:21,995 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:21,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:48:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 14:48:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 14:48:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:48:22,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678954323] [2020-08-21 14:48:22,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:48:22,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:48:22,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740791482] [2020-08-21 14:48:22,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:48:22,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:22,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:48:22,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:22,119 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand 12 states. [2020-08-21 14:48:22,743 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:23,073 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:23,335 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:23,604 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:24,123 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:25,050 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:25,361 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:25,618 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:25,860 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:26,164 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:26,444 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:27,752 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:28,131 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:28,800 INFO L93 Difference]: Finished difference Result 795 states and 1004 transitions. [2020-08-21 14:48:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:48:28,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 14:48:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:28,806 INFO L225 Difference]: With dead ends: 795 [2020-08-21 14:48:28,806 INFO L226 Difference]: Without dead ends: 596 [2020-08-21 14:48:28,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 14:48:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-21 14:48:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 534. [2020-08-21 14:48:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-08-21 14:48:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 617 transitions. [2020-08-21 14:48:28,914 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 617 transitions. Word has length 79 [2020-08-21 14:48:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:28,915 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 617 transitions. [2020-08-21 14:48:28,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:48:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 617 transitions. [2020-08-21 14:48:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 14:48:28,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:28,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:48:28,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:48:28,920 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:28,921 INFO L82 PathProgramCache]: Analyzing trace with hash 754253541, now seen corresponding path program 1 times [2020-08-21 14:48:28,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:28,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096135778] [2020-08-21 14:48:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,196 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:48:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:48:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 14:48:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 14:48:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 14:48:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 14:48:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 14:48:29,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096135778] [2020-08-21 14:48:29,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:29,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:48:29,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503618377] [2020-08-21 14:48:29,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:48:29,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:29,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:48:29,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:48:29,471 INFO L87 Difference]: Start difference. First operand 534 states and 617 transitions. Second operand 11 states. [2020-08-21 14:48:30,664 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 14:48:31,330 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:33,091 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 14:48:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:34,690 INFO L93 Difference]: Finished difference Result 1040 states and 1284 transitions. [2020-08-21 14:48:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 14:48:34,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-21 14:48:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:34,695 INFO L225 Difference]: With dead ends: 1040 [2020-08-21 14:48:34,695 INFO L226 Difference]: Without dead ends: 660 [2020-08-21 14:48:34,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-21 14:48:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-08-21 14:48:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 618. [2020-08-21 14:48:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-21 14:48:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 733 transitions. [2020-08-21 14:48:34,832 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 733 transitions. Word has length 154 [2020-08-21 14:48:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:34,833 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 733 transitions. [2020-08-21 14:48:34,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:48:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 733 transitions. [2020-08-21 14:48:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 14:48:34,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:34,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:48:34,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:48:34,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:34,837 INFO L82 PathProgramCache]: Analyzing trace with hash -205804435, now seen corresponding path program 1 times [2020-08-21 14:48:34,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:34,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699047813] [2020-08-21 14:48:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,082 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:48:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:48:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 14:48:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 14:48:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:48:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 14:48:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 14:48:35,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699047813] [2020-08-21 14:48:35,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:35,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:48:35,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280688884] [2020-08-21 14:48:35,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:48:35,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:35,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:48:35,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:35,288 INFO L87 Difference]: Start difference. First operand 618 states and 733 transitions. Second operand 12 states. [2020-08-21 14:48:35,900 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:36,150 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:36,387 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:36,987 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:37,233 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:37,449 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:38,580 INFO L93 Difference]: Finished difference Result 1241 states and 1528 transitions. [2020-08-21 14:48:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:48:38,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-21 14:48:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:38,588 INFO L225 Difference]: With dead ends: 1241 [2020-08-21 14:48:38,588 INFO L226 Difference]: Without dead ends: 647 [2020-08-21 14:48:38,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:48:38,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-08-21 14:48:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 608. [2020-08-21 14:48:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-21 14:48:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 720 transitions. [2020-08-21 14:48:38,780 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 720 transitions. Word has length 143 [2020-08-21 14:48:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:38,781 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 720 transitions. [2020-08-21 14:48:38,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:48:38,781 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 720 transitions. [2020-08-21 14:48:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 14:48:38,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:38,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:48:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:48:38,786 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:38,786 INFO L82 PathProgramCache]: Analyzing trace with hash 677704555, now seen corresponding path program 1 times [2020-08-21 14:48:38,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:38,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079295350] [2020-08-21 14:48:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,035 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:48:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:48:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 14:48:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 14:48:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:48:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 14:48:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 14:48:39,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079295350] [2020-08-21 14:48:39,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:39,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 14:48:39,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473808822] [2020-08-21 14:48:39,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:48:39,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:39,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:48:39,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:48:39,248 INFO L87 Difference]: Start difference. First operand 608 states and 720 transitions. Second operand 10 states. [2020-08-21 14:48:40,369 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:40,602 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:48:40,860 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:41,091 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:41,936 INFO L93 Difference]: Finished difference Result 1115 states and 1379 transitions. [2020-08-21 14:48:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:48:41,936 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-21 14:48:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:41,940 INFO L225 Difference]: With dead ends: 1115 [2020-08-21 14:48:41,941 INFO L226 Difference]: Without dead ends: 531 [2020-08-21 14:48:41,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:48:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-21 14:48:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 503. [2020-08-21 14:48:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-21 14:48:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 592 transitions. [2020-08-21 14:48:42,053 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 592 transitions. Word has length 143 [2020-08-21 14:48:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:42,053 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 592 transitions. [2020-08-21 14:48:42,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:48:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 592 transitions. [2020-08-21 14:48:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 14:48:42,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:42,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:48:42,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:48:42,056 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:42,057 INFO L82 PathProgramCache]: Analyzing trace with hash 744245076, now seen corresponding path program 1 times [2020-08-21 14:48:42,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:42,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284446101] [2020-08-21 14:48:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,343 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:48:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:48:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 14:48:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 14:48:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 14:48:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 14:48:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 14:48:42,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284446101] [2020-08-21 14:48:42,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:42,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:48:42,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588295591] [2020-08-21 14:48:42,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:48:42,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:48:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:48:42,644 INFO L87 Difference]: Start difference. First operand 503 states and 592 transitions. Second operand 15 states. [2020-08-21 14:48:43,235 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:43,960 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:44,876 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:45,170 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:45,424 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:45,694 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:46,005 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:46,274 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:46,836 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 14:48:47,348 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 14:48:48,194 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:48,422 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:48,677 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:48,920 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:49,660 INFO L93 Difference]: Finished difference Result 1337 states and 1633 transitions. [2020-08-21 14:48:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 14:48:49,661 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-21 14:48:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:49,669 INFO L225 Difference]: With dead ends: 1337 [2020-08-21 14:48:49,669 INFO L226 Difference]: Without dead ends: 858 [2020-08-21 14:48:49,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 14:48:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-21 14:48:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 816. [2020-08-21 14:48:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-21 14:48:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 943 transitions. [2020-08-21 14:48:49,833 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 943 transitions. Word has length 147 [2020-08-21 14:48:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:49,833 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 943 transitions. [2020-08-21 14:48:49,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:48:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 943 transitions. [2020-08-21 14:48:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 14:48:49,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:49,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:48:49,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:48:49,837 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:49,837 INFO L82 PathProgramCache]: Analyzing trace with hash 857110512, now seen corresponding path program 1 times [2020-08-21 14:48:49,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:49,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466117659] [2020-08-21 14:48:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,114 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:48:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:48:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 14:48:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 14:48:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 14:48:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 14:48:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:48:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 14:48:50,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466117659] [2020-08-21 14:48:50,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:50,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:48:50,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426719378] [2020-08-21 14:48:50,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:48:50,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:50,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:48:50,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:48:50,260 INFO L87 Difference]: Start difference. First operand 816 states and 943 transitions. Second operand 11 states. [2020-08-21 14:48:50,698 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:52,521 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:52,756 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:53,014 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:53,281 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:53,522 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:54,073 INFO L93 Difference]: Finished difference Result 967 states and 1196 transitions. [2020-08-21 14:48:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:48:54,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-08-21 14:48:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:54,080 INFO L225 Difference]: With dead ends: 967 [2020-08-21 14:48:54,081 INFO L226 Difference]: Without dead ends: 964 [2020-08-21 14:48:54,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 14:48:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-08-21 14:48:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 816. [2020-08-21 14:48:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-21 14:48:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 940 transitions. [2020-08-21 14:48:54,272 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 940 transitions. Word has length 151 [2020-08-21 14:48:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:54,275 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 940 transitions. [2020-08-21 14:48:54,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:48:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 940 transitions. [2020-08-21 14:48:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 14:48:54,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:54,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:48:54,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:48:54,278 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash -671566746, now seen corresponding path program 1 times [2020-08-21 14:48:54,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:54,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471132155] [2020-08-21 14:48:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,557 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:48:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:48:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 14:48:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 14:48:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:48:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 14:48:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:48:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 14:48:54,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471132155] [2020-08-21 14:48:54,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:54,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:48:54,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106901520] [2020-08-21 14:48:54,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:48:54,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:54,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:48:54,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:54,802 INFO L87 Difference]: Start difference. First operand 816 states and 940 transitions. Second operand 12 states. [2020-08-21 14:48:55,275 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:55,865 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:56,652 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:56,917 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:57,162 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:57,410 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:57,706 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:57,958 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:59,278 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:49:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:49:00,075 INFO L93 Difference]: Finished difference Result 1937 states and 2374 transitions. [2020-08-21 14:49:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 14:49:00,076 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-21 14:49:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:49:00,084 INFO L225 Difference]: With dead ends: 1937 [2020-08-21 14:49:00,084 INFO L226 Difference]: Without dead ends: 1271 [2020-08-21 14:49:00,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 14:49:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-08-21 14:49:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1102. [2020-08-21 14:49:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 14:49:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1285 transitions. [2020-08-21 14:49:00,320 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1285 transitions. Word has length 151 [2020-08-21 14:49:00,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:49:00,320 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1285 transitions. [2020-08-21 14:49:00,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:49:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1285 transitions. [2020-08-21 14:49:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-08-21 14:49:00,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:49:00,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 14:49:00,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 14:49:00,326 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:49:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:49:00,326 INFO L82 PathProgramCache]: Analyzing trace with hash -939199605, now seen corresponding path program 2 times [2020-08-21 14:49:00,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:49:00,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880518832] [2020-08-21 14:49:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:49:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:49:00,384 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:49:00,385 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:49:00,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 14:49:00,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:49:00 BoogieIcfgContainer [2020-08-21 14:49:00,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:49:00,428 INFO L168 Benchmark]: Toolchain (without parser) took 54791.27 ms. Allocated memory was 140.5 MB in the beginning and 674.2 MB in the end (delta: 533.7 MB). Free memory was 101.8 MB in the beginning and 362.0 MB in the end (delta: -260.2 MB). Peak memory consumption was 273.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:49:00,429 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:49:00,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.09 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 172.9 MB in the end (delta: -71.5 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:49:00,430 INFO L168 Benchmark]: Boogie Preprocessor took 84.35 ms. Allocated memory is still 204.5 MB. Free memory was 172.9 MB in the beginning and 168.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:49:00,431 INFO L168 Benchmark]: RCFGBuilder took 1191.21 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 168.2 MB in the beginning and 195.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:49:00,432 INFO L168 Benchmark]: TraceAbstraction took 52807.51 ms. Allocated memory was 236.5 MB in the beginning and 674.2 MB in the end (delta: 437.8 MB). Free memory was 194.5 MB in the beginning and 362.0 MB in the end (delta: -167.5 MB). Peak memory consumption was 270.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:49:00,435 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 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.09 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 172.9 MB in the end (delta: -71.5 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.35 ms. Allocated memory is still 204.5 MB. Free memory was 172.9 MB in the beginning and 168.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1191.21 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 168.2 MB in the beginning and 195.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52807.51 ms. Allocated memory was 236.5 MB in the beginning and 674.2 MB in the end (delta: 437.8 MB). Free memory was 194.5 MB in the beginning and 362.0 MB in the end (delta: -167.5 MB). Peak memory consumption was 270.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L758] int waterLevel = 1; [L759] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L945] int retValue_acc ; [L948] retValue_acc = 1 [L949] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L853] int splverifierCounter ; [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L857] int tmp___2 ; [L860] splverifierCounter = 0 [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND TRUE \read(tmp) [L874] CALL waterRise() [L776] COND TRUE waterLevel < 2 [L777] waterLevel = waterLevel + 1 [L874] RET waterRise() [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND FALSE !(\read(pumpRunning)) [L635] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L731] int retValue_acc ; [L732] int tmp ; [L733] int tmp___0 ; [L737] CALL, EXPR isHighWaterSensorDry() [L838] int retValue_acc ; [L841] COND FALSE !(waterLevel < 2) [L845] retValue_acc = 0 [L846] return (retValue_acc); [L737] RET, EXPR isHighWaterSensorDry() [L737] tmp = isHighWaterSensorDry() [L739] COND FALSE !(\read(tmp)) [L742] tmp___0 = 1 [L744] retValue_acc = tmp___0 [L745] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L650] int tmp ; [L654] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L654] RET, EXPR isMethaneAlarm() [L654] tmp = isMethaneAlarm() [L656] COND FALSE !(\read(tmp)) [L660] CALL activatePump__wrappee__highWaterSensor() [L645] pumpRunning = 1 [L660] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L635] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND TRUE tmp == 0 [L157] CALL, EXPR isPumpRunning() [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); [L157] RET, EXPR isPumpRunning() [L157] tmp___0 = isPumpRunning() [L159] COND TRUE \read(tmp___0) [L161] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.7s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 45.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1603 SDtfs, 4231 SDslu, 2044 SDs, 0 SdLazy, 11210 SolverSat, 2934 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 452 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 703 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 1460 NumberOfCodeBlocks, 1460 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1245 ConstructedInterpolants, 0 QuantifiedInterpolants, 474746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 188/217 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...