/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:17:26,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:17:26,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:17:26,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:17:26,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:17:26,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:17:26,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:17:26,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:17:26,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:17:26,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:17:26,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:17:26,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:17:26,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:17:26,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:17:26,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:17:26,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:17:26,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:17:26,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:17:26,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:17:26,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:17:26,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:17:26,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:17:26,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:17:26,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:17:26,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:17:26,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:17:26,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:17:26,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:17:26,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:17:26,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:17:26,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:17:26,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:17:26,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:17:26,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:17:26,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:17:26,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:17:26,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:17:26,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:17:26,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:17:26,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:17:26,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:17:26,384 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 23:17:26,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:17:26,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:17:26,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:17:26,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:17:26,405 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:17:26,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:17:26,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:17:26,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:17:26,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:17:26,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:17:26,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:17:26,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:17:26,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:17:26,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:17:26,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:17:26,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:17:26,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:17:26,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:17:26,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:17:26,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:17:26,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:17:26,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:17:26,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:17:26,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:17:26,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:17:26,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:17:26,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:17:26,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:17:26,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:17:26,410 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=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:17:26,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:17:26,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:17:26,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:17:26,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:17:26,696 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:17:26,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-08-18 23:17:26,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b220bc89f/21843f95729d4671ba019b8570eaf29b/FLAGeb1e1f207 [2020-08-18 23:17:27,211 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:17:27,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-08-18 23:17:27,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b220bc89f/21843f95729d4671ba019b8570eaf29b/FLAGeb1e1f207 [2020-08-18 23:17:27,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b220bc89f/21843f95729d4671ba019b8570eaf29b [2020-08-18 23:17:27,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:17:27,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:17:27,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:27,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:17:27,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:17:27,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e9a99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27, skipping insertion in model container [2020-08-18 23:17:27,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:17:27,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:17:28,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:28,027 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:17:28,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:28,174 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:17:28,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28 WrapperNode [2020-08-18 23:17:28,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:28,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:17:28,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:17:28,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:17:28,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (1/1) ... [2020-08-18 23:17:28,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (1/1) ... [2020-08-18 23:17:28,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (1/1) ... [2020-08-18 23:17:28,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (1/1) ... [2020-08-18 23:17:28,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (1/1) ... [2020-08-18 23:17:28,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (1/1) ... [2020-08-18 23:17:28,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (1/1) ... [2020-08-18 23:17:28,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:17:28,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:17:28,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:17:28,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:17:28,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (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 23:17:28,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:17:28,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:17:28,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:28,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:17:28,376 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:17:28,376 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:17:28,376 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:17:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:17:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:17:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:17:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:17:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:17:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:17:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 23:17:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 23:17:28,380 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:17:28,380 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:17:28,380 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:17:28,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:17:28,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:17:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:17:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:17:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:17:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:17:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:17:28,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:17:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:17:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:17:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:17:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:17:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:17:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:17:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:17:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:17:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:17:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:17:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:17:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:17:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:17:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:17:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:17:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:17:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:17:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:17:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:17:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:17:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:17:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:17:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 23:17:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 23:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:17:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:17:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:17:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:17:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:17:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:17:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:17:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:17:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:17:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:17:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:17:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:17:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:17:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:17:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:17:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:17:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:17:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:17:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:17:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:17:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:17:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:17:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:17:31,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:17:31,452 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:17:31,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:31 BoogieIcfgContainer [2020-08-18 23:17:31,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:17:31,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:17:31,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:17:31,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:17:31,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:17:27" (1/3) ... [2020-08-18 23:17:31,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d78e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:31, skipping insertion in model container [2020-08-18 23:17:31,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:28" (2/3) ... [2020-08-18 23:17:31,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d78e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:31, skipping insertion in model container [2020-08-18 23:17:31,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:31" (3/3) ... [2020-08-18 23:17:31,465 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-08-18 23:17:31,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:17:31,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:17:31,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:17:31,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:17:31,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:17:31,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:17:31,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:17:31,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:17:31,519 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:17:31,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:17:31,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:17:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-08-18 23:17:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 23:17:31,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:31,549 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 23:17:31,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:31,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:31,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-08-18 23:17:31,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:31,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931280262] [2020-08-18 23:17:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,186 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:17:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:17:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,298 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 23:17:32,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931280262] [2020-08-18 23:17:32,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:32,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:17:32,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993340187] [2020-08-18 23:17:32,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:17:32,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:32,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:17:32,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:17:32,324 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-08-18 23:17:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:33,362 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-18 23:17:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:17:33,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 23:17:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:33,377 INFO L225 Difference]: With dead ends: 278 [2020-08-18 23:17:33,377 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 23:17:33,382 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 23:17:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 23:17:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-18 23:17:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 23:17:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-18 23:17:33,497 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-18 23:17:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:33,499 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-18 23:17:33,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:17:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-18 23:17:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 23:17:33,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:33,504 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 23:17:33,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:17:33,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-08-18 23:17:33,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:33,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600523455] [2020-08-18 23:17:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,829 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:33,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:17:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:17:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:33,889 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 23:17:33,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600523455] [2020-08-18 23:17:33,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:33,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:17:33,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964970802] [2020-08-18 23:17:33,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:17:33,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:17:33,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:17:33,894 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-18 23:17:34,323 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:34,962 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-18 23:17:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:17:34,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 23:17:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:34,967 INFO L225 Difference]: With dead ends: 198 [2020-08-18 23:17:34,968 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 23:17:34,970 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 23:17:34,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 23:17:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-18 23:17:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 23:17:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-18 23:17:35,017 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-18 23:17:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:35,018 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-18 23:17:35,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:17:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-18 23:17:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:17:35,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:35,029 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 23:17:35,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:17:35,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:35,030 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-08-18 23:17:35,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:35,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024499800] [2020-08-18 23:17:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,368 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:17:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:17:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,464 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 23:17:35,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024499800] [2020-08-18 23:17:35,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:35,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:17:35,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140499705] [2020-08-18 23:17:35,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:17:35,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:35,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:17:35,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:17:35,466 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-18 23:17:35,849 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:36,124 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:36,374 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:36,616 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:37,303 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:38,679 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-18 23:17:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:17:38,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 23:17:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:38,685 INFO L225 Difference]: With dead ends: 378 [2020-08-18 23:17:38,685 INFO L226 Difference]: Without dead ends: 293 [2020-08-18 23:17:38,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:17:38,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-18 23:17:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-18 23:17:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 23:17:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-18 23:17:38,744 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-18 23:17:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:38,745 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-18 23:17:38,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:17:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-18 23:17:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 23:17:38,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:38,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:17:38,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:17:38,747 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-08-18 23:17:38,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:38,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505268625] [2020-08-18 23:17:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,022 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:17:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:17:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:17:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:39,101 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 23:17:39,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505268625] [2020-08-18 23:17:39,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:39,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:17:39,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993674997] [2020-08-18 23:17:39,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:17:39,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:39,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:17:39,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:17:39,103 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 8 states. [2020-08-18 23:17:39,510 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:40,497 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:40,789 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:41,052 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:41,276 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:41,592 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:42,310 INFO L93 Difference]: Finished difference Result 713 states and 925 transitions. [2020-08-18 23:17:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:17:42,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 23:17:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:42,317 INFO L225 Difference]: With dead ends: 713 [2020-08-18 23:17:42,317 INFO L226 Difference]: Without dead ends: 517 [2020-08-18 23:17:42,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 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 23:17:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-08-18 23:17:42,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 395. [2020-08-18 23:17:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-18 23:17:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 474 transitions. [2020-08-18 23:17:42,425 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 474 transitions. Word has length 57 [2020-08-18 23:17:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:42,426 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 474 transitions. [2020-08-18 23:17:42,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:17:42,426 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 474 transitions. [2020-08-18 23:17:42,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 23:17:42,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:42,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:17:42,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:17:42,428 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:42,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1256704497, now seen corresponding path program 1 times [2020-08-18 23:17:42,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:42,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252342381] [2020-08-18 23:17:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,698 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:17:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:17:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 23:17:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:42,821 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 23:17:42,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252342381] [2020-08-18 23:17:42,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:42,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:17:42,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675504874] [2020-08-18 23:17:42,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:17:42,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:42,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:17:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:17:42,823 INFO L87 Difference]: Start difference. First operand 395 states and 474 transitions. Second operand 9 states. [2020-08-18 23:17:43,317 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:44,274 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:44,552 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:44,814 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:45,294 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:45,563 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:46,338 INFO L93 Difference]: Finished difference Result 1150 states and 1524 transitions. [2020-08-18 23:17:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:17:46,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 23:17:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:46,345 INFO L225 Difference]: With dead ends: 1150 [2020-08-18 23:17:46,345 INFO L226 Difference]: Without dead ends: 779 [2020-08-18 23:17:46,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:17:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-08-18 23:17:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 615. [2020-08-18 23:17:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-08-18 23:17:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-08-18 23:17:46,517 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 61 [2020-08-18 23:17:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:46,517 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-08-18 23:17:46,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:17:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-08-18 23:17:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 23:17:46,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:46,520 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 23:17:46,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:17:46,520 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash 148740965, now seen corresponding path program 1 times [2020-08-18 23:17:46,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:46,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78173284] [2020-08-18 23:17:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,766 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:17:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 23:17:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:17:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:46,936 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 23:17:46,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78173284] [2020-08-18 23:17:46,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:46,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:17:46,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118387342] [2020-08-18 23:17:46,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:17:46,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:46,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:17:46,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:17:46,941 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 9 states. [2020-08-18 23:17:47,556 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:48,513 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:48,743 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:17:48,988 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:49,235 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:50,774 INFO L93 Difference]: Finished difference Result 2147 states and 3042 transitions. [2020-08-18 23:17:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:17:50,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 23:17:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:50,791 INFO L225 Difference]: With dead ends: 2147 [2020-08-18 23:17:50,791 INFO L226 Difference]: Without dead ends: 1556 [2020-08-18 23:17:50,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:17:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2020-08-18 23:17:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1159. [2020-08-18 23:17:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-18 23:17:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1412 transitions. [2020-08-18 23:17:51,012 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1412 transitions. Word has length 79 [2020-08-18 23:17:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:51,012 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1412 transitions. [2020-08-18 23:17:51,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:17:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1412 transitions. [2020-08-18 23:17:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 23:17:51,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:51,015 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 23:17:51,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:17:51,016 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-08-18 23:17:51,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:51,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702669491] [2020-08-18 23:17:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,276 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:17:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 23:17:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:17:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,366 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 23:17:51,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702669491] [2020-08-18 23:17:51,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:51,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:17:51,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120676412] [2020-08-18 23:17:51,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:17:51,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:17:51,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:17:51,369 INFO L87 Difference]: Start difference. First operand 1159 states and 1412 transitions. Second operand 9 states. [2020-08-18 23:17:52,546 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:52,748 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:17:52,997 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:53,251 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:54,163 INFO L93 Difference]: Finished difference Result 2704 states and 3585 transitions. [2020-08-18 23:17:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:17:54,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 23:17:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:54,179 INFO L225 Difference]: With dead ends: 2704 [2020-08-18 23:17:54,179 INFO L226 Difference]: Without dead ends: 1569 [2020-08-18 23:17:54,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 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 23:17:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-08-18 23:17:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1199. [2020-08-18 23:17:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2020-08-18 23:17:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1452 transitions. [2020-08-18 23:17:54,393 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1452 transitions. Word has length 79 [2020-08-18 23:17:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:54,394 INFO L479 AbstractCegarLoop]: Abstraction has 1199 states and 1452 transitions. [2020-08-18 23:17:54,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:17:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1452 transitions. [2020-08-18 23:17:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 23:17:54,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:54,397 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 23:17:54,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:17:54,397 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:54,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:54,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-08-18 23:17:54,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:54,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717609242] [2020-08-18 23:17:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,643 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:54,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:17:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 23:17:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:17:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:54,760 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 23:17:54,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717609242] [2020-08-18 23:17:54,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:54,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:17:54,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791019237] [2020-08-18 23:17:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:17:54,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:54,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:17:54,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:17:54,762 INFO L87 Difference]: Start difference. First operand 1199 states and 1452 transitions. Second operand 11 states. [2020-08-18 23:17:55,447 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:55,651 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:55,868 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:56,540 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:56,814 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:57,047 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:57,913 INFO L93 Difference]: Finished difference Result 2398 states and 3135 transitions. [2020-08-18 23:17:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:17:57,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-18 23:17:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:57,923 INFO L225 Difference]: With dead ends: 2398 [2020-08-18 23:17:57,924 INFO L226 Difference]: Without dead ends: 1223 [2020-08-18 23:17:57,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 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 23:17:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-08-18 23:17:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 973. [2020-08-18 23:17:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-08-18 23:17:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1148 transitions. [2020-08-18 23:17:58,101 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1148 transitions. Word has length 79 [2020-08-18 23:17:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:58,102 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1148 transitions. [2020-08-18 23:17:58,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:17:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1148 transitions. [2020-08-18 23:17:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 23:17:58,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:58,105 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 23:17:58,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:17:58,105 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:58,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:58,105 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-08-18 23:17:58,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:58,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737987656] [2020-08-18 23:17:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:17:58,181 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:17:58,181 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:17:58,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:17:58,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:17:58 BoogieIcfgContainer [2020-08-18 23:17:58,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:17:58,219 INFO L168 Benchmark]: Toolchain (without parser) took 30692.54 ms. Allocated memory was 147.3 MB in the beginning and 643.3 MB in the end (delta: 496.0 MB). Free memory was 102.8 MB in the beginning and 580.2 MB in the end (delta: -477.4 MB). Peak memory consumption was 487.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:58,220 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:17:58,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.91 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 102.5 MB in the beginning and 171.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:58,229 INFO L168 Benchmark]: Boogie Preprocessor took 111.45 ms. Allocated memory is still 202.9 MB. Free memory was 171.4 MB in the beginning and 167.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:58,231 INFO L168 Benchmark]: RCFGBuilder took 3169.30 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 166.7 MB in the beginning and 197.1 MB in the end (delta: -30.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:58,232 INFO L168 Benchmark]: TraceAbstraction took 26759.59 ms. Allocated memory was 234.9 MB in the beginning and 643.3 MB in the end (delta: 408.4 MB). Free memory was 195.7 MB in the beginning and 580.2 MB in the end (delta: -384.4 MB). Peak memory consumption was 492.5 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:58,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.91 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 102.5 MB in the beginning and 171.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.45 ms. Allocated memory is still 202.9 MB. Free memory was 171.4 MB in the beginning and 167.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3169.30 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 166.7 MB in the beginning and 197.1 MB in the end (delta: -30.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26759.59 ms. Allocated memory was 234.9 MB in the beginning and 643.3 MB in the end (delta: 408.4 MB). Free memory was 195.7 MB in the beginning and 580.2 MB in the end (delta: -384.4 MB). Peak memory consumption was 492.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) [L391] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L200] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); [L200] RET, EXPR isHighWaterSensorDry() [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L106] CALL activatePump() [L125] pumpRunning = 1 [L106] RET activatePump() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification1_spec__1() [L808] int tmp ; [L809] int tmp___0 ; [L813] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L813] RET, EXPR isMethaneLevelCritical() [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L817] CALL, EXPR isPumpRunning() [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); [L817] RET, EXPR isPumpRunning() [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) [L821] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 837 SDtfs, 1659 SDslu, 1113 SDs, 0 SdLazy, 4897 SolverSat, 1141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1199occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1435 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 583 NumberOfCodeBlocks, 583 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 492 ConstructedInterpolants, 0 QuantifiedInterpolants, 143100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...