/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=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:56:45,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:56:45,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:56:45,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:56:45,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:56:45,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:56:45,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:56:45,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:56:45,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:56:45,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:56:45,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:56:45,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:56:45,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:56:45,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:56:45,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:56:45,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:56:45,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:56:45,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:56:45,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:56:45,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:56:45,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:56:45,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:56:45,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:56:45,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:56:45,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:56:45,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:56:45,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:56:45,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:56:45,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:56:45,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:56:45,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:56:45,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:56:45,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:56:45,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:56:45,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:56:45,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:56:45,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:56:45,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:56:45,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:56:45,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:56:45,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:56:45,363 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 [2020-08-19 00:56:45,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:56:45,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:56:45,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:56:45,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:56:45,418 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:56:45,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:56:45,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:56:45,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:56:45,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:56:45,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:56:45,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:56:45,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:56:45,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:56:45,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:56:45,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:56:45,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:56:45,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:56:45,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:56:45,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:56:45,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:56:45,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:56:45,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:56:45,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:56:45,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:56:45,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:56:45,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:56:45,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:56:45,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:56:45,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:56:45,423 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=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:56:45,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:56:45,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:56:45,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:56:45,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:56:45,795 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:56:45,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-19 00:56:45,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f890978dd/c213289e9312443687178b975725b1d3/FLAGc30489aec [2020-08-19 00:56:46,403 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:56:46,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-19 00:56:46,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f890978dd/c213289e9312443687178b975725b1d3/FLAGc30489aec [2020-08-19 00:56:46,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f890978dd/c213289e9312443687178b975725b1d3 [2020-08-19 00:56:46,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:56:46,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:56:46,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:56:46,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:56:46,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:56:46,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:56:46" (1/1) ... [2020-08-19 00:56:46,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a1b9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:46, skipping insertion in model container [2020-08-19 00:56:46,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:56:46" (1/1) ... [2020-08-19 00:56:46,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:56:46,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:56:47,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:56:47,191 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:56:47,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:56:47,345 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:56:47,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47 WrapperNode [2020-08-19 00:56:47,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:56:47,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:56:47,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:56:47,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:56:47,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (1/1) ... [2020-08-19 00:56:47,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:56:47,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:56:47,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:56:47,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:56:47,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (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 [2020-08-19 00:56:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:56:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:56:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:56:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:56:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:56:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:56:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:56:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:56:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:56:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:56:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:56:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:56:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:56:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:56:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:56:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:56:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:56:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:56:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:56:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:56:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:56:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:56:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:56:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:56:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:56:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:56:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:56:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:56:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:56:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:56:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:56:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:56:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:56:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:56:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:56:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:56:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:56:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:56:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:56:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:56:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:56:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:56:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:56:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:56:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:56:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:56:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:56:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:56:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:56:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:56:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:56:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:56:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:56:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:56:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:56:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:56:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:56:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:56:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:56:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:56:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:56:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:56:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:56:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:56:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:56:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:56:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:56:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:56:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:56:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:56:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:56:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:56:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:56:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:56:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:56:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:56:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:56:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:56:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:56:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:56:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:56:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:56:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:56:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:56:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:56:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:56:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:56:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:56:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:56:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:56:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:56:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:56:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:56:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:56:48,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:56:48,569 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:56:48,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:56:48 BoogieIcfgContainer [2020-08-19 00:56:48,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:56:48,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:56:48,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:56:48,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:56:48,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:56:46" (1/3) ... [2020-08-19 00:56:48,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ae849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:56:48, skipping insertion in model container [2020-08-19 00:56:48,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:56:47" (2/3) ... [2020-08-19 00:56:48,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ae849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:56:48, skipping insertion in model container [2020-08-19 00:56:48,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:56:48" (3/3) ... [2020-08-19 00:56:48,588 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-08-19 00:56:48,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:56:48,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:56:48,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:56:48,649 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:56:48,649 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:56:48,649 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:56:48,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:56:48,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:56:48,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:56:48,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:56:48,653 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:56:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 00:56:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:56:48,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:48,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:48,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash 171708589, now seen corresponding path program 1 times [2020-08-19 00:56:48,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:48,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312820527] [2020-08-19 00:56:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,333 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:49,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:56:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:56:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:49,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312820527] [2020-08-19 00:56:49,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:49,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:56:49,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751156722] [2020-08-19 00:56:49,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:56:49,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:49,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:56:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:56:49,509 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 00:56:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:50,665 INFO L93 Difference]: Finished difference Result 279 states and 365 transitions. [2020-08-19 00:56:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:56:50,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:56:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:50,686 INFO L225 Difference]: With dead ends: 279 [2020-08-19 00:56:50,686 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 00:56:50,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:56:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 00:56:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 123. [2020-08-19 00:56:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 00:56:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-19 00:56:50,798 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 51 [2020-08-19 00:56:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:50,799 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-19 00:56:50,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:56:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-19 00:56:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:56:50,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:50,804 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] [2020-08-19 00:56:50,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:56:50,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:50,805 INFO L82 PathProgramCache]: Analyzing trace with hash -70243324, now seen corresponding path program 1 times [2020-08-19 00:56:50,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:50,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072058641] [2020-08-19 00:56:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,221 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:51,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:56:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:56:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:51,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072058641] [2020-08-19 00:56:51,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:51,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:56:51,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110890284] [2020-08-19 00:56:51,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:56:51,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:56:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:56:51,282 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 5 states. [2020-08-19 00:56:51,775 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:56:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:52,587 INFO L93 Difference]: Finished difference Result 211 states and 262 transitions. [2020-08-19 00:56:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:56:52,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:56:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:52,590 INFO L225 Difference]: With dead ends: 211 [2020-08-19 00:56:52,590 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 00:56:52,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:56:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 00:56:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2020-08-19 00:56:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 00:56:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-19 00:56:52,635 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 52 [2020-08-19 00:56:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:52,636 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-19 00:56:52,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:56:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-19 00:56:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:56:52,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:52,638 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] [2020-08-19 00:56:52,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:56:52,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:52,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1406294977, now seen corresponding path program 1 times [2020-08-19 00:56:52,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:52,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191643135] [2020-08-19 00:56:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:52,976 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:56:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:56:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:53,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191643135] [2020-08-19 00:56:53,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:53,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:56:53,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059441954] [2020-08-19 00:56:53,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:56:53,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:53,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:56:53,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:56:53,053 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 9 states. [2020-08-19 00:56:53,412 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:53,717 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:53,981 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:54,247 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:55,058 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:56:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:56,738 INFO L93 Difference]: Finished difference Result 390 states and 490 transitions. [2020-08-19 00:56:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:56:56,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 00:56:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:56,743 INFO L225 Difference]: With dead ends: 390 [2020-08-19 00:56:56,743 INFO L226 Difference]: Without dead ends: 304 [2020-08-19 00:56:56,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:56:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-08-19 00:56:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 227. [2020-08-19 00:56:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-08-19 00:56:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2020-08-19 00:56:56,813 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 57 [2020-08-19 00:56:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:56,814 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2020-08-19 00:56:56,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:56:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2020-08-19 00:56:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 00:56:56,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:56,817 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] [2020-08-19 00:56:56,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:56:56,817 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:56,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:56,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1471569046, now seen corresponding path program 1 times [2020-08-19 00:56:56,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:56,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756105745] [2020-08-19 00:56:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,193 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:56:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:56:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:56:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:56:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:56:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:56:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:56:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:56:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:56:57,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756105745] [2020-08-19 00:56:57,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:57,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:56:57,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174313478] [2020-08-19 00:56:57,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:56:57,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:57,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:56:57,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:56:57,291 INFO L87 Difference]: Start difference. First operand 227 states and 272 transitions. Second operand 9 states. [2020-08-19 00:56:57,707 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:56:58,838 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:59,150 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:59,408 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:56:59,656 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:00,683 INFO L93 Difference]: Finished difference Result 730 states and 972 transitions. [2020-08-19 00:57:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:57:00,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 00:57:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:00,689 INFO L225 Difference]: With dead ends: 730 [2020-08-19 00:57:00,689 INFO L226 Difference]: Without dead ends: 531 [2020-08-19 00:57:00,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:57:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-19 00:57:00,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 402. [2020-08-19 00:57:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-08-19 00:57:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 484 transitions. [2020-08-19 00:57:00,796 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 484 transitions. Word has length 62 [2020-08-19 00:57:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:00,797 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 484 transitions. [2020-08-19 00:57:00,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:57:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 484 transitions. [2020-08-19 00:57:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 00:57:00,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:00,800 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] [2020-08-19 00:57:00,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:57:00,800 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:00,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:00,801 INFO L82 PathProgramCache]: Analyzing trace with hash -675634618, now seen corresponding path program 1 times [2020-08-19 00:57:00,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:00,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457492145] [2020-08-19 00:57:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,137 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:57:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:57:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 00:57:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:01,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457492145] [2020-08-19 00:57:01,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:01,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:01,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946367636] [2020-08-19 00:57:01,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:01,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:01,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:01,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:01,246 INFO L87 Difference]: Start difference. First operand 402 states and 484 transitions. Second operand 10 states. [2020-08-19 00:57:01,656 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:02,696 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:02,974 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:03,254 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:03,811 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:04,897 INFO L93 Difference]: Finished difference Result 1162 states and 1576 transitions. [2020-08-19 00:57:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 00:57:04,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 00:57:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:04,907 INFO L225 Difference]: With dead ends: 1162 [2020-08-19 00:57:04,907 INFO L226 Difference]: Without dead ends: 788 [2020-08-19 00:57:04,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:57:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-08-19 00:57:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 593. [2020-08-19 00:57:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-08-19 00:57:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 715 transitions. [2020-08-19 00:57:05,026 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 715 transitions. Word has length 66 [2020-08-19 00:57:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:05,027 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 715 transitions. [2020-08-19 00:57:05,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:57:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 715 transitions. [2020-08-19 00:57:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:57:05,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:05,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:05,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:57:05,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:05,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:05,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1616247053, now seen corresponding path program 1 times [2020-08-19 00:57:05,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:05,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662562958] [2020-08-19 00:57:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,310 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:05,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:57:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:57:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:05,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662562958] [2020-08-19 00:57:05,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:05,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:05,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325625137] [2020-08-19 00:57:05,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:05,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:05,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:05,468 INFO L87 Difference]: Start difference. First operand 593 states and 715 transitions. Second operand 10 states. [2020-08-19 00:57:05,872 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:06,989 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:07,270 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:57:07,551 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:07,845 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:09,477 INFO L93 Difference]: Finished difference Result 2139 states and 3058 transitions. [2020-08-19 00:57:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:57:09,478 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 00:57:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:09,493 INFO L225 Difference]: With dead ends: 2139 [2020-08-19 00:57:09,493 INFO L226 Difference]: Without dead ends: 1574 [2020-08-19 00:57:09,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:57:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2020-08-19 00:57:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1135. [2020-08-19 00:57:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-08-19 00:57:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1372 transitions. [2020-08-19 00:57:09,847 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1372 transitions. Word has length 84 [2020-08-19 00:57:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:09,847 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1372 transitions. [2020-08-19 00:57:09,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:57:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1372 transitions. [2020-08-19 00:57:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:57:09,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:09,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:09,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:57:09,855 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:09,855 INFO L82 PathProgramCache]: Analyzing trace with hash 567429874, now seen corresponding path program 1 times [2020-08-19 00:57:09,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:09,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852711500] [2020-08-19 00:57:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,129 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:57:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:57:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:10,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852711500] [2020-08-19 00:57:10,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:10,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:10,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706471749] [2020-08-19 00:57:10,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:10,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:10,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:10,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:10,299 INFO L87 Difference]: Start difference. First operand 1135 states and 1372 transitions. Second operand 10 states. [2020-08-19 00:57:11,469 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:11,743 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:57:12,059 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:12,308 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:13,442 INFO L93 Difference]: Finished difference Result 2694 states and 3601 transitions. [2020-08-19 00:57:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:57:13,443 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 00:57:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:13,455 INFO L225 Difference]: With dead ends: 2694 [2020-08-19 00:57:13,455 INFO L226 Difference]: Without dead ends: 1587 [2020-08-19 00:57:13,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:57:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-08-19 00:57:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1175. [2020-08-19 00:57:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-08-19 00:57:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1412 transitions. [2020-08-19 00:57:13,740 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1412 transitions. Word has length 84 [2020-08-19 00:57:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:13,740 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1412 transitions. [2020-08-19 00:57:13,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:57:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1412 transitions. [2020-08-19 00:57:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:57:13,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:13,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:13,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:57:13,744 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:13,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:13,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1953633268, now seen corresponding path program 1 times [2020-08-19 00:57:13,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:13,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569521749] [2020-08-19 00:57:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:13,993 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:13,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:57:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:57:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:14,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569521749] [2020-08-19 00:57:14,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:14,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:57:14,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749645049] [2020-08-19 00:57:14,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:57:14,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:14,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:57:14,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:57:14,144 INFO L87 Difference]: Start difference. First operand 1175 states and 1412 transitions. Second operand 12 states. [2020-08-19 00:57:14,859 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:15,167 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:15,386 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:16,168 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:16,436 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:16,673 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:17,909 INFO L93 Difference]: Finished difference Result 2386 states and 3145 transitions. [2020-08-19 00:57:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:57:17,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 00:57:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:17,919 INFO L225 Difference]: With dead ends: 2386 [2020-08-19 00:57:17,920 INFO L226 Difference]: Without dead ends: 1239 [2020-08-19 00:57:17,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:57:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-08-19 00:57:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 951. [2020-08-19 00:57:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-08-19 00:57:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1112 transitions. [2020-08-19 00:57:18,111 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1112 transitions. Word has length 84 [2020-08-19 00:57:18,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:18,111 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1112 transitions. [2020-08-19 00:57:18,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:57:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1112 transitions. [2020-08-19 00:57:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:57:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:18,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:18,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:57:18,115 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1427109873, now seen corresponding path program 1 times [2020-08-19 00:57:18,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:18,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074009333] [2020-08-19 00:57:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,391 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:18,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:57:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:57:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:57:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:57:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:57:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:18,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074009333] [2020-08-19 00:57:18,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:18,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:57:18,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529744631] [2020-08-19 00:57:18,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:57:18,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:18,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:57:18,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:57:18,521 INFO L87 Difference]: Start difference. First operand 951 states and 1112 transitions. Second operand 8 states. [2020-08-19 00:57:18,901 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:20,962 INFO L93 Difference]: Finished difference Result 1906 states and 2527 transitions. [2020-08-19 00:57:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 00:57:20,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-19 00:57:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:20,974 INFO L225 Difference]: With dead ends: 1906 [2020-08-19 00:57:20,975 INFO L226 Difference]: Without dead ends: 1903 [2020-08-19 00:57:20,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:57:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-08-19 00:57:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1456. [2020-08-19 00:57:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-08-19 00:57:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1720 transitions. [2020-08-19 00:57:21,292 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1720 transitions. Word has length 88 [2020-08-19 00:57:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:21,292 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 1720 transitions. [2020-08-19 00:57:21,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:57:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1720 transitions. [2020-08-19 00:57:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 00:57:21,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:21,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:21,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:57:21,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:21,301 INFO L82 PathProgramCache]: Analyzing trace with hash 475998026, now seen corresponding path program 1 times [2020-08-19 00:57:21,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:21,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380918297] [2020-08-19 00:57:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:57:21,376 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:57:21,376 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:57:21,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:57:21,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:57:21 BoogieIcfgContainer [2020-08-19 00:57:21,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:57:21,433 INFO L168 Benchmark]: Toolchain (without parser) took 34710.21 ms. Allocated memory was 140.5 MB in the beginning and 662.2 MB in the end (delta: 521.7 MB). Free memory was 101.6 MB in the beginning and 119.3 MB in the end (delta: -17.7 MB). Peak memory consumption was 503.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:57:21,436 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:57:21,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.69 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 101.4 MB in the beginning and 166.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:57:21,443 INFO L168 Benchmark]: Boogie Preprocessor took 87.66 ms. Allocated memory is still 200.8 MB. Free memory was 166.8 MB in the beginning and 162.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:57:21,444 INFO L168 Benchmark]: RCFGBuilder took 1143.66 ms. Allocated memory was 200.8 MB in the beginning and 235.9 MB in the end (delta: 35.1 MB). Free memory was 162.9 MB in the beginning and 192.3 MB in the end (delta: -29.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:57:21,444 INFO L168 Benchmark]: TraceAbstraction took 32848.21 ms. Allocated memory was 235.9 MB in the beginning and 662.2 MB in the end (delta: 426.2 MB). Free memory was 192.3 MB in the beginning and 119.3 MB in the end (delta: 73.0 MB). Peak memory consumption was 499.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:57:21,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.69 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 101.4 MB in the beginning and 166.8 MB in the end (delta: -65.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.66 ms. Allocated memory is still 200.8 MB. Free memory was 166.8 MB in the beginning and 162.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1143.66 ms. Allocated memory was 200.8 MB in the beginning and 235.9 MB in the end (delta: 35.1 MB). Free memory was 162.9 MB in the beginning and 192.3 MB in the end (delta: -29.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32848.21 ms. Allocated memory was 235.9 MB in the beginning and 662.2 MB in the end (delta: 426.2 MB). Free memory was 192.3 MB in the beginning and 119.3 MB in the end (delta: 73.0 MB). Peak memory consumption was 499.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L630] RET, EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L616] CALL __utac_acc__Specification2_spec__1() [L910] methAndRunningLastTime = 0 [L616] RET __utac_acc__Specification2_spec__1() [L617] CALL test() [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) [L849] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L849] RET waterRise() [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) [L859] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L859] RET changeMethaneLevel() [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; [L791] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L791] RET, EXPR isHighWaterSensorDry() [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L716] pumpRunning = 1 [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 [L674] RET __utac_acc__Specification2_spec__2() [L884] RET timeShift() [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND TRUE \read(methAndRunningLastTime) [L929] CALL __automaton_fail() [L900] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.7s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 26.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 958 SDtfs, 2942 SDslu, 1447 SDs, 0 SdLazy, 6228 SolverSat, 2312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1456occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 2054 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 759 NumberOfCodeBlocks, 759 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 192303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...