/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:38:38,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:38:38,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:38:38,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:38:38,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:38:38,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:38:38,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:38:38,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:38:38,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:38:38,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:38:38,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:38:38,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:38:38,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:38:38,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:38:38,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:38:38,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:38:38,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:38:38,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:38:38,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:38:38,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:38:38,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:38:38,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:38:38,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:38:38,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:38:38,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:38:38,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:38:38,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:38:38,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:38:38,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:38:38,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:38:38,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:38:38,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:38:38,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:38:38,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:38:38,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:38:38,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:38:38,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:38:38,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:38:38,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:38:38,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:38:38,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:38:38,388 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 06:38:38,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:38:38,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:38:38,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:38:38,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:38:38,413 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:38:38,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:38:38,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:38:38,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:38:38,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:38:38,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:38:38,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:38:38,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:38:38,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:38:38,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:38:38,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:38:38,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:38:38,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:38:38,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:38:38,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:38:38,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:38:38,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:38:38,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:38:38,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:38:38,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:38:38,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:38:38,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:38:38,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:38:38,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:38:38,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:38:38,418 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:38:38,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:38:38,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:38:38,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:38:38,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:38:38,756 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:38:38,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-08-19 06:38:38,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab8ffb0b9/9d5b2c5931d740f88d4a4d805e7ebe97/FLAGf186e7a9b [2020-08-19 06:38:39,366 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:38:39,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-08-19 06:38:39,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab8ffb0b9/9d5b2c5931d740f88d4a4d805e7ebe97/FLAGf186e7a9b [2020-08-19 06:38:39,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab8ffb0b9/9d5b2c5931d740f88d4a4d805e7ebe97 [2020-08-19 06:38:39,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:38:39,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:38:39,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:38:39,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:38:39,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:38:39,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:38:39" (1/1) ... [2020-08-19 06:38:39,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29df31b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:39, skipping insertion in model container [2020-08-19 06:38:39,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:38:39" (1/1) ... [2020-08-19 06:38:39,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:38:39,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:38:40,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:38:40,150 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:38:40,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:38:40,275 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:38:40,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40 WrapperNode [2020-08-19 06:38:40,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:38:40,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:38:40,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:38:40,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:38:40,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (1/1) ... [2020-08-19 06:38:40,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (1/1) ... [2020-08-19 06:38:40,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (1/1) ... [2020-08-19 06:38:40,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (1/1) ... [2020-08-19 06:38:40,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (1/1) ... [2020-08-19 06:38:40,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (1/1) ... [2020-08-19 06:38:40,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (1/1) ... [2020-08-19 06:38:40,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:38:40,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:38:40,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:38:40,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:38:40,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (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 06:38:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:38:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:38:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:38:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:38:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:38:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:38:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:38:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:38:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:38:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:38:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:38:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:38:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:38:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:38:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:38:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:38:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:38:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:38:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:38:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:38:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:38:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:38:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:38:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:38:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:38:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:38:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:38:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:38:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:38:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:38:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 06:38:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:38:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:38:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:38:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:38:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:38:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:38:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:38:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:38:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:38:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:38:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:38:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:38:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:38:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:38:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:38:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:38:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:38:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:38:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:38:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:38:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:38:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:38:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:38:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:38:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:38:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:38:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:38:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:38:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:38:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:38:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:38:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:38:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:38:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:38:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:38:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:38:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:38:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:38:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:38:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:38:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:38:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:38:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:38:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:38:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:38:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:38:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:38:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:38:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:38:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:38:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:38:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:38:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:38:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:38:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 06:38:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:38:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:38:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:38:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:38:41,566 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:38:41,566 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:38:41,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:38:41 BoogieIcfgContainer [2020-08-19 06:38:41,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:38:41,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:38:41,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:38:41,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:38:41,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:38:39" (1/3) ... [2020-08-19 06:38:41,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65960245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:38:41, skipping insertion in model container [2020-08-19 06:38:41,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:40" (2/3) ... [2020-08-19 06:38:41,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65960245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:38:41, skipping insertion in model container [2020-08-19 06:38:41,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:38:41" (3/3) ... [2020-08-19 06:38:41,580 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2020-08-19 06:38:41,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:38:41,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:38:41,612 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:38:41,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:38:41,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:38:41,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:38:41,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:38:41,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:38:41,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:38:41,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:38:41,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:38:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-08-19 06:38:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:38:41,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:41,674 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 06:38:41,675 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:41,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:41,682 INFO L82 PathProgramCache]: Analyzing trace with hash -950316372, now seen corresponding path program 1 times [2020-08-19 06:38:41,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:41,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742221971] [2020-08-19 06:38:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,379 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:42,500 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 06:38:42,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742221971] [2020-08-19 06:38:42,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:42,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:38:42,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922538936] [2020-08-19 06:38:42,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:38:42,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:42,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:38:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:38:42,530 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-08-19 06:38:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:43,645 INFO L93 Difference]: Finished difference Result 259 states and 341 transitions. [2020-08-19 06:38:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:38:43,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 06:38:43,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:43,662 INFO L225 Difference]: With dead ends: 259 [2020-08-19 06:38:43,662 INFO L226 Difference]: Without dead ends: 140 [2020-08-19 06:38:43,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:38:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-19 06:38:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-08-19 06:38:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-19 06:38:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2020-08-19 06:38:43,758 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52 [2020-08-19 06:38:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:43,758 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2020-08-19 06:38:43,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:38:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2020-08-19 06:38:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 06:38:43,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:43,763 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] [2020-08-19 06:38:43,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:38:43,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:43,764 INFO L82 PathProgramCache]: Analyzing trace with hash 878728997, now seen corresponding path program 1 times [2020-08-19 06:38:43,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:43,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721224678] [2020-08-19 06:38:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,142 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:44,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:38:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:38:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:38:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:44,207 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 06:38:44,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721224678] [2020-08-19 06:38:44,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:44,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:38:44,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970125634] [2020-08-19 06:38:44,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:38:44,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:44,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:38:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:38:44,211 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 4 states. [2020-08-19 06:38:44,642 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:45,291 INFO L93 Difference]: Finished difference Result 192 states and 232 transitions. [2020-08-19 06:38:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:38:45,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 06:38:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:45,295 INFO L225 Difference]: With dead ends: 192 [2020-08-19 06:38:45,295 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 06:38:45,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:38:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 06:38:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-08-19 06:38:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-19 06:38:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-08-19 06:38:45,331 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 53 [2020-08-19 06:38:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:45,331 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-08-19 06:38:45,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:38:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-08-19 06:38:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:38:45,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:45,334 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 06:38:45,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:38:45,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:45,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:45,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1316004347, now seen corresponding path program 1 times [2020-08-19 06:38:45,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:45,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542775265] [2020-08-19 06:38:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,658 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:38:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:38:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 06:38:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:45,765 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 06:38:45,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542775265] [2020-08-19 06:38:45,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:45,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:38:45,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612731024] [2020-08-19 06:38:45,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:38:45,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:38:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:38:45,773 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 8 states. [2020-08-19 06:38:46,167 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:46,463 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:46,694 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:46,935 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:47,817 INFO L93 Difference]: Finished difference Result 201 states and 246 transitions. [2020-08-19 06:38:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:38:47,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 06:38:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:47,821 INFO L225 Difference]: With dead ends: 201 [2020-08-19 06:38:47,821 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 06:38:47,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:38:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 06:38:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-08-19 06:38:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-19 06:38:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-08-19 06:38:47,874 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 57 [2020-08-19 06:38:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:47,875 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-08-19 06:38:47,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-08-19 06:38:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 06:38:47,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:47,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:38:47,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:38:47,878 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:47,879 INFO L82 PathProgramCache]: Analyzing trace with hash -402432006, now seen corresponding path program 1 times [2020-08-19 06:38:47,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:47,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879646998] [2020-08-19 06:38:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,173 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:38:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:38:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 06:38:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 06:38:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:48,254 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 06:38:48,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879646998] [2020-08-19 06:38:48,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:48,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:38:48,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802957885] [2020-08-19 06:38:48,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:38:48,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:38:48,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:38:48,256 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2020-08-19 06:38:48,615 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:49,770 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:50,075 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:50,364 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:50,629 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:51,146 INFO L93 Difference]: Finished difference Result 299 states and 390 transitions. [2020-08-19 06:38:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:38:51,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-08-19 06:38:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:51,153 INFO L225 Difference]: With dead ends: 299 [2020-08-19 06:38:51,153 INFO L226 Difference]: Without dead ends: 222 [2020-08-19 06:38:51,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:38:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-08-19 06:38:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176. [2020-08-19 06:38:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 06:38:51,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions. [2020-08-19 06:38:51,209 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 65 [2020-08-19 06:38:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:51,210 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 207 transitions. [2020-08-19 06:38:51,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions. [2020-08-19 06:38:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 06:38:51,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:51,213 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] [2020-08-19 06:38:51,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:38:51,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:51,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:51,213 INFO L82 PathProgramCache]: Analyzing trace with hash -643922522, now seen corresponding path program 1 times [2020-08-19 06:38:51,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:51,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646268296] [2020-08-19 06:38:51,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,521 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:38:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:38:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 06:38:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:38:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:38:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:51,619 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 06:38:51,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646268296] [2020-08-19 06:38:51,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:51,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:38:51,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319015347] [2020-08-19 06:38:51,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:38:51,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:51,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:38:51,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:38:51,621 INFO L87 Difference]: Start difference. First operand 176 states and 207 transitions. Second operand 6 states. [2020-08-19 06:38:51,938 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:52,411 INFO L93 Difference]: Finished difference Result 289 states and 355 transitions. [2020-08-19 06:38:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:38:52,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-08-19 06:38:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:52,413 INFO L225 Difference]: With dead ends: 289 [2020-08-19 06:38:52,413 INFO L226 Difference]: Without dead ends: 137 [2020-08-19 06:38:52,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:38:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-19 06:38:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-08-19 06:38:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 06:38:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-08-19 06:38:52,445 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73 [2020-08-19 06:38:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:52,445 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-08-19 06:38:52,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:38:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-08-19 06:38:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 06:38:52,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:52,447 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] [2020-08-19 06:38:52,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:38:52,448 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1866072192, now seen corresponding path program 1 times [2020-08-19 06:38:52,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:52,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314744586] [2020-08-19 06:38:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:38:52,502 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:38:52,502 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:38:52,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:38:52,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:38:52 BoogieIcfgContainer [2020-08-19 06:38:52,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:38:52,529 INFO L168 Benchmark]: Toolchain (without parser) took 12861.56 ms. Allocated memory was 139.5 MB in the beginning and 412.6 MB in the end (delta: 273.2 MB). Free memory was 101.9 MB in the beginning and 116.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 258.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:52,530 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-19 06:38:52,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.76 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 168.6 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:52,532 INFO L168 Benchmark]: Boogie Preprocessor took 116.15 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 164.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:52,533 INFO L168 Benchmark]: RCFGBuilder took 1177.24 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 164.7 MB in the beginning and 194.4 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:52,534 INFO L168 Benchmark]: TraceAbstraction took 10954.83 ms. Allocated memory was 235.9 MB in the beginning and 412.6 MB in the end (delta: 176.7 MB). Free memory was 194.4 MB in the beginning and 116.7 MB in the end (delta: 77.7 MB). Peak memory consumption was 254.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:52,537 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.76 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 168.6 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.15 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 164.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1177.24 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 164.7 MB in the beginning and 194.4 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10954.83 ms. Allocated memory was 235.9 MB in the beginning and 412.6 MB in the end (delta: 176.7 MB). Free memory was 194.4 MB in the beginning and 116.7 MB in the end (delta: 77.7 MB). Peak memory consumption was 254.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L256] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L458] int waterLevel = 1; [L459] int methaneLevelCritical = 0; [L585] int cleanupTimeShifts = 4; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L661] int retValue_acc ; [L662] int tmp ; [L666] FCALL select_helpers() [L667] FCALL select_features() [L668] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L668] RET, EXPR valid_product() [L668] tmp = valid_product() [L670] COND TRUE \read(tmp) [L672] FCALL setup() [L673] CALL runTest() [L655] CALL test() [L857] int splverifierCounter ; [L858] int tmp ; [L859] int tmp___0 ; [L860] int tmp___1 ; [L861] int tmp___2 ; [L864] splverifierCounter = 0 [L866] COND TRUE 1 [L868] COND TRUE splverifierCounter < 4 [L874] tmp = __VERIFIER_nondet_int() [L876] COND TRUE \read(tmp) [L878] CALL waterRise() [L476] COND TRUE waterLevel < 2 [L477] waterLevel = waterLevel + 1 [L878] RET waterRise() [L884] tmp___0 = __VERIFIER_nondet_int() [L886] COND FALSE !(\read(tmp___0)) [L894] tmp___2 = __VERIFIER_nondet_int() [L896] COND TRUE \read(tmp___2) [L909] CALL timeShift() [L693] COND FALSE !(\read(pumpRunning)) [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L722] int tmp ; [L725] COND FALSE !(\read(pumpRunning)) [L740] FCALL processEnvironment__wrappee__base() [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L497] int retValue_acc ; [L500] retValue_acc = methaneLevelCritical [L501] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L529] int retValue_acc ; [L532] retValue_acc = waterLevel [L533] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 622 SDslu, 249 SDs, 0 SdLazy, 1325 SolverSat, 355 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...