/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:27:48,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:27:48,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:27:48,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:27:48,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:27:48,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:27:48,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:27:48,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:27:48,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:27:48,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:27:48,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:27:48,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:27:48,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:27:48,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:27:48,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:27:48,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:27:48,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:27:48,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:27:48,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:27:48,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:27:48,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:27:48,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:27:48,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:27:48,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:27:48,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:27:48,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:27:48,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:27:48,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:27:48,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:27:48,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:27:48,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:27:48,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:27:48,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:27:48,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:27:48,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:27:48,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:27:48,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:27:48,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:27:48,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:27:48,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:27:48,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:27:48,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:27:48,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:27:48,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:27:48,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:27:48,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:27:48,409 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:27:48,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:27:48,410 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:27:48,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:27:48,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:27:48,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:27:48,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:27:48,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:27:48,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:27:48,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:27:48,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:27:48,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:27:48,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:27:48,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:27:48,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:27:48,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:27:48,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:27:48,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:27:48,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:27:48,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:27:48,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:27:48,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:27:48,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:27:48,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:27:48,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:27:48,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:27:48,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:27:48,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:27:48,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:27:48,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:27:48,728 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:27:48,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 18:27:48,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c8d0fe6/8b24c8e2f99a4853909f8d155ca33ef4/FLAGc128eb6ac [2020-08-18 18:27:49,292 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:27:49,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 18:27:49,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c8d0fe6/8b24c8e2f99a4853909f8d155ca33ef4/FLAGc128eb6ac [2020-08-18 18:27:49,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5c8d0fe6/8b24c8e2f99a4853909f8d155ca33ef4 [2020-08-18 18:27:49,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:27:49,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:27:49,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:49,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:27:49,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:27:49,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:49" (1/1) ... [2020-08-18 18:27:49,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:49, skipping insertion in model container [2020-08-18 18:27:49,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:49" (1/1) ... [2020-08-18 18:27:49,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:27:49,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:27:50,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:50,061 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:27:50,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:50,283 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:27:50,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50 WrapperNode [2020-08-18 18:27:50,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:50,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:27:50,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:27:50,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:27:50,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... [2020-08-18 18:27:50,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... [2020-08-18 18:27:50,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... [2020-08-18 18:27:50,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... [2020-08-18 18:27:50,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... [2020-08-18 18:27:50,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... [2020-08-18 18:27:50,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... [2020-08-18 18:27:50,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:27:50,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:27:50,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:27:50,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:27:50,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:27:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:27:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:27:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:27:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:27:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:27:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:27:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:27:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:27:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:27:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:27:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:27:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:27:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:27:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:27:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:27:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:27:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:27:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:27:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:27:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:27:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:27:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:27:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:27:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:27:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:27:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:27:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:27:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:27:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:27:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:27:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:27:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:27:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:27:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:27:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:27:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:27:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:27:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:27:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:27:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:27:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:27:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:27:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:27:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:27:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:27:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:27:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:27:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:27:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:27:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:27:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:27:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:27:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:27:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:27:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:27:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:27:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:27:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:27:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:27:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:27:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:27:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:27:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:27:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:27:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:27:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:27:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:27:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:27:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:27:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:27:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:27:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:27:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:27:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:27:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:27:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:27:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:27:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:27:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:27:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:27:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:27:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:27:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:27:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:27:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:27:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:27:51,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:27:51,482 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:27:51,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:51 BoogieIcfgContainer [2020-08-18 18:27:51,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:27:51,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:27:51,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:27:51,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:27:51,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:27:49" (1/3) ... [2020-08-18 18:27:51,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50eb7deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:51, skipping insertion in model container [2020-08-18 18:27:51,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:50" (2/3) ... [2020-08-18 18:27:51,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50eb7deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:51, skipping insertion in model container [2020-08-18 18:27:51,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:51" (3/3) ... [2020-08-18 18:27:51,501 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-08-18 18:27:51,511 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:27:51,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:27:51,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:27:51,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:27:51,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:27:51,567 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:27:51,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:27:51,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:27:51,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:27:51,569 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:27:51,569 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:27:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-18 18:27:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 18:27:51,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:51,607 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] [2020-08-18 18:27:51,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:51,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-08-18 18:27:51,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:51,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855662063] [2020-08-18 18:27:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,242 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:52,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:27:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:52,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855662063] [2020-08-18 18:27:52,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:52,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:27:52,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453711524] [2020-08-18 18:27:52,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:27:52,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:52,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:27:52,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:52,370 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-18 18:27:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:53,424 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-18 18:27:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:27:53,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 18:27:53,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:53,441 INFO L225 Difference]: With dead ends: 306 [2020-08-18 18:27:53,441 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 18:27:53,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 18:27:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 18:27:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 18:27:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-18 18:27:53,536 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-18 18:27:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:53,537 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-18 18:27:53,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:27:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-18 18:27:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:27:53,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:53,541 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] [2020-08-18 18:27:53,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:27:53,541 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:53,542 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-08-18 18:27:53,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:53,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014829442] [2020-08-18 18:27:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,878 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:27:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:27:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:53,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014829442] [2020-08-18 18:27:53,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:53,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:27:53,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144719045] [2020-08-18 18:27:53,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:27:53,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:53,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:27:53,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:27:53,939 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-18 18:27:54,317 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:55,117 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-18 18:27:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:27:55,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 18:27:55,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:55,121 INFO L225 Difference]: With dead ends: 235 [2020-08-18 18:27:55,122 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 18:27:55,125 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 [2020-08-18 18:27:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 18:27:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 18:27:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 18:27:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 18:27:55,163 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-18 18:27:55,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:55,163 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 18:27:55,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:27:55,164 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 18:27:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:27:55,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:55,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:55,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:27:55,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:55,167 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-08-18 18:27:55,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:55,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951432463] [2020-08-18 18:27:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,529 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:55,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:27:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:55,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951432463] [2020-08-18 18:27:55,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:55,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:27:55,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437630472] [2020-08-18 18:27:55,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:27:55,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:55,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:27:55,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:27:55,654 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-18 18:27:55,989 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:56,314 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:56,545 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:56,761 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:57,889 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-18 18:27:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:27:57,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 18:27:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:57,894 INFO L225 Difference]: With dead ends: 248 [2020-08-18 18:27:57,895 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 18:27:57,896 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 [2020-08-18 18:27:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 18:27:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 18:27:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 18:27:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-18 18:27:57,931 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-18 18:27:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:57,931 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-18 18:27:57,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:27:57,931 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-18 18:27:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 18:27:57,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:57,934 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] [2020-08-18 18:27:57,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:27:57,934 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-08-18 18:27:57,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:57,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843194473] [2020-08-18 18:27:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,215 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:27:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:27:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 18:27:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:27:58,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843194473] [2020-08-18 18:27:58,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:58,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:27:58,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109368590] [2020-08-18 18:27:58,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:27:58,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:58,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:27:58,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:27:58,298 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-18 18:27:58,623 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:59,676 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:00,323 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-18 18:28:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:28:00,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 18:28:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:00,328 INFO L225 Difference]: With dead ends: 345 [2020-08-18 18:28:00,328 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 18:28:00,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:28:00,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 18:28:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-18 18:28:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-18 18:28:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-18 18:28:00,403 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-18 18:28:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:00,403 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-18 18:28:00,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:28:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-18 18:28:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 18:28:00,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:00,406 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] [2020-08-18 18:28:00,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:28:00,406 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-08-18 18:28:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:00,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076989654] [2020-08-18 18:28:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,676 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:28:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:28:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 18:28:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:28:00,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076989654] [2020-08-18 18:28:00,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:00,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:28:00,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080743225] [2020-08-18 18:28:00,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:28:00,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:00,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:28:00,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:28:00,804 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-08-18 18:28:01,196 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:02,256 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:02,507 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:02,728 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:02,941 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:03,247 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:04,205 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-08-18 18:28:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:28:04,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 18:28:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:04,212 INFO L225 Difference]: With dead ends: 607 [2020-08-18 18:28:04,213 INFO L226 Difference]: Without dead ends: 428 [2020-08-18 18:28:04,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:28:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-18 18:28:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-08-18 18:28:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 18:28:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-08-18 18:28:04,293 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-08-18 18:28:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:04,294 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-08-18 18:28:04,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:28:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-08-18 18:28:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 18:28:04,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:04,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:04,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:28:04,296 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:04,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-08-18 18:28:04,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:04,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734899246] [2020-08-18 18:28:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,579 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 18:28:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 18:28:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:28:04,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734899246] [2020-08-18 18:28:04,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:04,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:28:04,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261970850] [2020-08-18 18:28:04,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:28:04,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:04,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:28:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:28:04,681 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-08-18 18:28:05,165 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:06,191 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:06,399 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:06,645 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:06,879 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:07,109 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:08,086 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-08-18 18:28:08,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:28:08,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 18:28:08,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:08,092 INFO L225 Difference]: With dead ends: 470 [2020-08-18 18:28:08,092 INFO L226 Difference]: Without dead ends: 467 [2020-08-18 18:28:08,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:28:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-08-18 18:28:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-08-18 18:28:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 18:28:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-18 18:28:08,172 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-08-18 18:28:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:08,173 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-18 18:28:08,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-18 18:28:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:28:08,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:08,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:08,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:28:08,175 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-08-18 18:28:08,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:08,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080179419] [2020-08-18 18:28:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,406 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:08,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:28:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:28:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:28:08,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080179419] [2020-08-18 18:28:08,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:08,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:28:08,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339997239] [2020-08-18 18:28:08,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:28:08,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:08,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:28:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:28:08,559 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-08-18 18:28:09,456 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:09,686 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:28:09,927 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:10,149 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:11,137 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-08-18 18:28:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:28:11,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 18:28:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:11,142 INFO L225 Difference]: With dead ends: 808 [2020-08-18 18:28:11,142 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 18:28:11,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:28:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 18:28:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-08-18 18:28:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-18 18:28:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-08-18 18:28:11,213 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-08-18 18:28:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:11,214 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-08-18 18:28:11,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:28:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-08-18 18:28:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:28:11,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:11,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:11,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:28:11,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:11,217 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-08-18 18:28:11,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:11,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629393169] [2020-08-18 18:28:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,459 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:28:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:28:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:28:11,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629393169] [2020-08-18 18:28:11,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:11,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 18:28:11,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318284526] [2020-08-18 18:28:11,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:28:11,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:11,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:28:11,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:28:11,597 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 11 states. [2020-08-18 18:28:12,197 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:28:12,432 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:12,646 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:13,273 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:13,509 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:13,743 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:28:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:14,853 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-08-18 18:28:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:28:14,855 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 18:28:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:14,862 INFO L225 Difference]: With dead ends: 832 [2020-08-18 18:28:14,862 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 18:28:14,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:28:14,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 18:28:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-18 18:28:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 18:28:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-08-18 18:28:14,989 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-08-18 18:28:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:14,990 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-08-18 18:28:14,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:28:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-08-18 18:28:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:28:14,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:14,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:14,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:28:14,995 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:14,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:14,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-08-18 18:28:14,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:14,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845758067] [2020-08-18 18:28:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,286 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:28:15,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:28:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:28:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:28:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:28:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:28:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:28:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:28:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:28:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:28:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:28:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:28:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:28:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:28:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:28:15,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845758067] [2020-08-18 18:28:15,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:28:15,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:28:15,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486353441] [2020-08-18 18:28:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:28:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:28:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:28:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:28:15,410 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-08-18 18:28:15,818 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:16,282 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:28:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:28:18,340 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-08-18 18:28:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:28:18,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 18:28:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:28:18,347 INFO L225 Difference]: With dead ends: 1174 [2020-08-18 18:28:18,347 INFO L226 Difference]: Without dead ends: 819 [2020-08-18 18:28:18,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:28:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-18 18:28:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-08-18 18:28:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-08-18 18:28:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-08-18 18:28:18,560 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-08-18 18:28:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:28:18,561 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-08-18 18:28:18,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:28:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-08-18 18:28:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:28:18,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:28:18,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:28:18,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:28:18,568 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:28:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:28:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-08-18 18:28:18,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:28:18,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727423911] [2020-08-18 18:28:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:28:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:28:18,644 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:28:18,644 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:28:18,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:28:18,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:28:18 BoogieIcfgContainer [2020-08-18 18:28:18,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:28:18,695 INFO L168 Benchmark]: Toolchain (without parser) took 29061.30 ms. Allocated memory was 141.6 MB in the beginning and 611.8 MB in the end (delta: 470.3 MB). Free memory was 104.4 MB in the beginning and 142.0 MB in the end (delta: -37.6 MB). Peak memory consumption was 432.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,697 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 650.78 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 104.2 MB in the beginning and 174.4 MB in the end (delta: -70.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,705 INFO L168 Benchmark]: Boogie Preprocessor took 94.56 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,705 INFO L168 Benchmark]: RCFGBuilder took 1111.43 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.4 MB in the beginning and 195.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,706 INFO L168 Benchmark]: TraceAbstraction took 27197.47 ms. Allocated memory was 235.4 MB in the beginning and 611.8 MB in the end (delta: 376.4 MB). Free memory was 193.6 MB in the beginning and 142.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 428.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:28:18,714 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 650.78 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 104.2 MB in the beginning and 174.4 MB in the end (delta: -70.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.56 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1111.43 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.4 MB in the beginning and 195.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27197.47 ms. Allocated memory was 235.4 MB in the beginning and 611.8 MB in the end (delta: 376.4 MB). Free memory was 193.6 MB in the beginning and 142.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 428.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1087 SDtfs, 1822 SDslu, 988 SDs, 0 SdLazy, 5118 SolverSat, 1182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...